diff --git a/packages/api/src/common/util/decorators/param-decorator.ts b/packages/api/src/common/util/decorators/param-decorator.ts
index 4ed89fc0a..9f238c7bd 100644
--- a/packages/api/src/common/util/decorators/param-decorator.ts
+++ b/packages/api/src/common/util/decorators/param-decorator.ts
@@ -16,7 +16,7 @@ interface StudentProfile {
   email: string;
   type: string;
   studentId: number;
-  studentNumber: number;
+  studentNumber: string;
 }
 export type GetStudent = StudentProfile;
 interface ExecutiveProfile {
diff --git a/packages/api/src/drizzle/schema/user.schema.ts b/packages/api/src/drizzle/schema/user.schema.ts
index ec5504695..d1d2f9b9e 100644
--- a/packages/api/src/drizzle/schema/user.schema.ts
+++ b/packages/api/src/drizzle/schema/user.schema.ts
@@ -21,7 +21,7 @@ export const User = mysqlTable("user", {
 export const Student = mysqlTable("student", {
   id: int("id").autoincrement().primaryKey(),
   userId: int("user_id").references(() => User.id),
-  number: int("number").unique(),
+  number: varchar("number", { length: 10 }).unique().notNull(),
   name: varchar("name", { length: 255 }).notNull(),
   email: varchar("email", { length: 255 }),
   phoneNumber: varchar("phone_number", { length: 30 }),
diff --git a/packages/api/src/feature/auth/dto/auth.dto.ts b/packages/api/src/feature/auth/dto/auth.dto.ts
index 0b49e018d..c3f372921 100644
--- a/packages/api/src/feature/auth/dto/auth.dto.ts
+++ b/packages/api/src/feature/auth/dto/auth.dto.ts
@@ -6,7 +6,7 @@ interface User {
   name: string;
   email: string;
   studentId?: number;
-  studentNumber?: number;
+  studentNumber?: string;
   executiveId?: number;
 }
 
diff --git a/packages/api/src/feature/auth/repository/auth.repository.ts b/packages/api/src/feature/auth/repository/auth.repository.ts
index b85363c77..e25e732f8 100644
--- a/packages/api/src/feature/auth/repository/auth.repository.ts
+++ b/packages/api/src/feature/auth/repository/auth.repository.ts
@@ -26,15 +26,15 @@ interface FindOrCreateUserReturn {
   email: string;
   undergraduate?: {
     id: number;
-    number: number;
+    number: string;
   };
   master?: {
     id: number;
-    number: number;
+    number: string;
   };
   doctor?: {
     id: number;
-    number: number;
+    number: string;
   };
   executive?: {
     id: number;
@@ -101,7 +101,7 @@ export class AuthRepository {
         .insert(Student)
         .values({
           name,
-          number: parseInt(studentNumber),
+          number: studentNumber,
           userId: user.id,
           email,
         })
@@ -109,7 +109,7 @@ export class AuthRepository {
       const student = await this.db
         .select()
         .from(Student)
-        .where(eq(Student.number, parseInt(studentNumber)))
+        .where(eq(Student.number, studentNumber))
         .then(takeUnique);
 
       // studentNumber의 뒤 네자리가 2000 미만일 경우 studentEnum을 1, 5000미만일 경우 2, 6000미만일 경우 1, 나머지는 3으로 설정
@@ -132,9 +132,9 @@ export class AuthRepository {
       for (const student of students) {
         // eslint-disable-next-line @typescript-eslint/no-shadow
         let studentEnum = 3;
-        if (student.number % 10000 < 2000) studentEnum = 1;
-        else if (student.number % 10000 < 6000) studentEnum = 2;
-        else if (student.number % 10000 < 7000) studentEnum = 1;
+        if (parseInt(student.number.slice(-4)) < 2000) studentEnum = 1;
+        else if (parseInt(student.number.slice(-4)) < 6000) studentEnum = 2;
+        else if (parseInt(student.number.slice(-4)) < 7000) studentEnum = 1;
 
         if (studentEnum === 1) {
           result = {
@@ -283,15 +283,15 @@ export class AuthRepository {
     email: string;
     undergraduate?: {
       id: number;
-      number: number;
+      number: string;
     };
     master?: {
       id: number;
-      number: number;
+      number: string;
     };
     doctor?: {
       id: number;
-      number: number;
+      number: string;
     };
     executive?: {
       id: number;
@@ -319,15 +319,15 @@ export class AuthRepository {
       email: string;
       undergraduate?: {
         id: number;
-        number: number;
+        number: string;
       };
       master?: {
         id: number;
-        number: number;
+        number: string;
       };
       doctor?: {
         id: number;
-        number: number;
+        number: string;
       };
       executive?: {
         id: number;
@@ -356,9 +356,9 @@ export class AuthRepository {
     // eslint-disable-next-line no-restricted-syntax, @typescript-eslint/no-shadow
     for (const student of await students) {
       let studentEnum = 3;
-      if (student.number % 10000 < 2000) studentEnum = 1;
-      else if (student.number % 10000 < 6000) studentEnum = 2;
-      else if (student.number % 10000 < 7000) studentEnum = 1;
+      if (parseInt(student.number.slice(-4)) < 2000) studentEnum = 1;
+      else if (parseInt(student.number.slice(-4)) < 6000) studentEnum = 2;
+      else if (parseInt(student.number.slice(-4)) < 7000) studentEnum = 1;
 
       if (studentEnum === 1) {
         result.undergraduate = { id: student.id, number: student.number };
diff --git a/packages/api/src/feature/auth/service/auth.service.ts b/packages/api/src/feature/auth/service/auth.service.ts
index 0a7886ffc..e95b7945c 100644
--- a/packages/api/src/feature/auth/service/auth.service.ts
+++ b/packages/api/src/feature/auth/service/auth.service.ts
@@ -162,15 +162,15 @@ export class AuthService {
     email: string;
     undergraduate?: {
       id: number;
-      number: number;
+      number: string;
     };
     master?: {
       id: number;
-      number: number;
+      number: string;
     };
     doctor?: {
       id: number;
-      number: number;
+      number: string;
     };
     executive?: {
       id: number;
diff --git a/packages/api/src/feature/club/service/club.public.service.ts b/packages/api/src/feature/club/service/club.public.service.ts
index a0f50bf83..8c4f63a62 100644
--- a/packages/api/src/feature/club/service/club.public.service.ts
+++ b/packages/api/src/feature/club/service/club.public.service.ts
@@ -101,7 +101,7 @@ export default class ClubPublicService {
     Array<{
       studentId: number;
       name: string;
-      studentNumber: number;
+      studentNumber: string;
     }>
   > {
     const result =
diff --git a/packages/interface/src/api/activity-certificate/endpoint/apiAcf004.ts b/packages/interface/src/api/activity-certificate/endpoint/apiAcf004.ts
index 1d40cc3dc..5cc9dc487 100644
--- a/packages/interface/src/api/activity-certificate/endpoint/apiAcf004.ts
+++ b/packages/interface/src/api/activity-certificate/endpoint/apiAcf004.ts
@@ -3,6 +3,7 @@ import { z } from "zod";
 
 import { ActivityCertificateOrderStatusEnum } from "@sparcs-clubs/interface/common/enum/activityCertificate.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -25,7 +26,7 @@ const responseBodyMap = {
   [HttpStatusCode.Ok]: z.object({
     id: z.coerce.number().int().min(1),
     clubId: z.coerce.number().int().min(1),
-    studentNumber: z.coerce.number().int().min(1),
+    studentNumber: zStudentNumber,
     studentPhoneNumber: zKrPhoneNumber,
     issuedNumber: z.coerce.number().int().min(1),
     statusEnum: z.nativeEnum(ActivityCertificateOrderStatusEnum),
diff --git a/packages/interface/src/api/activity/endpoint/apiAct002.ts b/packages/interface/src/api/activity/endpoint/apiAct002.ts
index 4a8fa8074..86413dc0e 100644
--- a/packages/interface/src/api/activity/endpoint/apiAct002.ts
+++ b/packages/interface/src/api/activity/endpoint/apiAct002.ts
@@ -5,6 +5,7 @@ import {
   ActivityStatusEnum,
   ActivityTypeEnum,
 } from "@sparcs-clubs/interface/common/enum/activity.enum";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -51,7 +52,7 @@ const responseBodyMap = {
     participants: z.array(
       z.object({
         studentId: z.coerce.number().int().min(1),
-        studentNumber: z.coerce.number().int().min(20000000),
+        studentNumber: zStudentNumber,
         name: z.string().max(255),
       }),
     ),
diff --git a/packages/interface/src/api/activity/endpoint/apiAct010.ts b/packages/interface/src/api/activity/endpoint/apiAct010.ts
index ea12b99ab..60b123081 100644
--- a/packages/interface/src/api/activity/endpoint/apiAct010.ts
+++ b/packages/interface/src/api/activity/endpoint/apiAct010.ts
@@ -2,7 +2,7 @@ import { HttpStatusCode } from "axios";
 import { z } from "zod";
 
 import { zUserName } from "@sparcs-clubs/interface/common/commonString";
-
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 /**
  * @version v0.1
  * @description
@@ -26,7 +26,7 @@ const responseBodyMap = {
     students: z.array(
       z.object({
         id: z.coerce.number().int().min(1),
-        studentNumber: z.coerce.number().int().min(1),
+        studentNumber: zStudentNumber,
         name: zUserName,
       }),
     ),
diff --git a/packages/interface/src/api/club/endpoint/apiClb006.ts b/packages/interface/src/api/club/endpoint/apiClb006.ts
index 8ceac0fe9..165c444bf 100644
--- a/packages/interface/src/api/club/endpoint/apiClb006.ts
+++ b/packages/interface/src/api/club/endpoint/apiClb006.ts
@@ -5,6 +5,7 @@ import { zUserName } from "@sparcs-clubs/interface/common/commonString";
 
 import { ClubDelegateEnum } from "@sparcs-clubs/interface/common/enum/club.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -28,7 +29,7 @@ const responseBodyMap = {
       z.object({
         delegateEnumId: z.nativeEnum(ClubDelegateEnum),
         studentId: z.coerce.number().int().min(1),
-        studentNumber: z.coerce.number().int().min(1),
+        studentNumber: zStudentNumber,
         name: zUserName,
         phoneNumber: zKrPhoneNumber,
       }),
diff --git a/packages/interface/src/api/club/endpoint/apiClb008.ts b/packages/interface/src/api/club/endpoint/apiClb008.ts
index a1044332d..7ef512aa2 100644
--- a/packages/interface/src/api/club/endpoint/apiClb008.ts
+++ b/packages/interface/src/api/club/endpoint/apiClb008.ts
@@ -3,6 +3,7 @@ import { z } from "zod";
 
 import { ClubDelegateEnum } from "@sparcs-clubs/interface/common/enum/club.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -30,7 +31,7 @@ const responseBodyMap = {
     students: z.array(
       z.object({
         id: z.coerce.number().int(),
-        studentNumber: z.string(),
+        studentNumber: zStudentNumber,
         name: z.coerce.string().max(20), // studentNumber는 string으로 통일!
         phoneNumber: zKrPhoneNumber,
       }),
diff --git a/packages/interface/src/api/club/endpoint/apiClb010.ts b/packages/interface/src/api/club/endpoint/apiClb010.ts
index d945df32a..2475211aa 100644
--- a/packages/interface/src/api/club/endpoint/apiClb010.ts
+++ b/packages/interface/src/api/club/endpoint/apiClb010.ts
@@ -2,6 +2,7 @@ import { HttpStatusCode } from "axios";
 import { z } from "zod";
 
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 /**
  * @version v0.1
  * @description semesterId에 해당하는 학기에 clubId의 동아리에서 활동한 모든 회원 정보를 가져옵니다.
@@ -26,7 +27,7 @@ const responseBodyMap = {
       .object({
         name: z.coerce.string().max(30),
         studentId: z.coerce.number().int().min(1),
-        studentNumber: z.coerce.number().int().min(20000000).max(30000000),
+        studentNumber: zStudentNumber,
         email: z.coerce.string().max(50),
         phoneNumber: zKrPhoneNumber.optional(),
       })
diff --git a/packages/interface/src/api/club/endpoint/apiClb011.ts b/packages/interface/src/api/club/endpoint/apiClb011.ts
index bbffc9e32..d51fdda28 100644
--- a/packages/interface/src/api/club/endpoint/apiClb011.ts
+++ b/packages/interface/src/api/club/endpoint/apiClb011.ts
@@ -2,6 +2,7 @@ import { HttpStatusCode } from "axios";
 import { z } from "zod";
 
 import { ClubDelegateChangeRequestStatusEnum } from "@sparcs-clubs/interface/common/enum/club.enum";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -25,7 +26,7 @@ const responseBodyMap = {
     requests: z
       .object({
         studentId: z.coerce.number().int().min(1),
-        studentNumber: z.coerce.number().int().min(20000000).max(30000000),
+        studentNumber: zStudentNumber,
         studentName: z.coerce.string(),
         clubDelegateChangeRequestStatusEnumId: z.nativeEnum(
           ClubDelegateChangeRequestStatusEnum,
diff --git a/packages/interface/src/api/club/endpoint/apiClb013.ts b/packages/interface/src/api/club/endpoint/apiClb013.ts
index 315b4ab41..ef40ebf06 100644
--- a/packages/interface/src/api/club/endpoint/apiClb013.ts
+++ b/packages/interface/src/api/club/endpoint/apiClb013.ts
@@ -2,6 +2,7 @@ import { HttpStatusCode } from "axios";
 import { z } from "zod";
 
 import { ClubDelegateChangeRequestStatusEnum } from "@sparcs-clubs/interface/common/enum/club.enum";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -23,7 +24,7 @@ const responseBodyMap = {
       .object({
         id: z.number().int().min(1),
         prevStudentId: z.coerce.number().int().min(1),
-        prevStudentNumber: z.coerce.number().int().min(20000000).max(30000000),
+        prevStudentNumber: zStudentNumber,
         prevStudentName: z.coerce.string(),
         clubId: z.coerce.number().int().min(1),
         clubName: z.coerce.string(),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg008.ts b/packages/interface/src/api/registration/endpoint/apiReg008.ts
index bcdb0ae86..a5920f2b7 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg008.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg008.ts
@@ -4,6 +4,7 @@ import { z } from "zod";
 import { zUserName } from "@sparcs-clubs/interface/common/commonString";
 import { RegistrationApplicationStudentStatusEnum } from "@sparcs-clubs/interface/common/enum/registration.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -34,7 +35,7 @@ const responseBodyMap = {
         student: z.object({
           id: z.coerce.number().int().min(1),
           name: zUserName,
-          studentNumber: z.coerce.number().int().min(1),
+          studentNumber: zStudentNumber,
           email: z.string(),
           phoneNumber: zKrPhoneNumber.optional(),
         }),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg011.ts b/packages/interface/src/api/registration/endpoint/apiReg011.ts
index e6bdfc8ac..c85e48614 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg011.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg011.ts
@@ -10,6 +10,7 @@ import {
 
 import { ProfessorEnum } from "@sparcs-clubs/interface/common/enum/user.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 import registrationTypeEnumChecker from "../utils/registrationTypeEnumChecker";
 
@@ -43,7 +44,7 @@ const responseBodyMap = {
       newClubNameKr: zClubName,
       newClubNameEn: zClubName,
       representative: z.object({
-        studentNumber: z.coerce.number().int().min(1),
+        studentNumber: zStudentNumber,
         name: z.string().max(30),
         phoneNumber: zKrPhoneNumber,
       }),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg015.ts b/packages/interface/src/api/registration/endpoint/apiReg015.ts
index f1fda78f4..a27c99572 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg015.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg015.ts
@@ -9,6 +9,7 @@ import {
 } from "@sparcs-clubs/interface/common/enum/registration.enum";
 import { ProfessorEnum } from "@sparcs-clubs/interface/common/enum/user.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 import registrationTypeEnumChecker from "../utils/registrationTypeEnumChecker";
 
@@ -41,7 +42,7 @@ const responseBodyMap = {
       newClubNameKr: zClubName,
       newClubNameEn: zClubName,
       representative: z.object({
-        studentNumber: z.coerce.number().int().min(1),
+        studentNumber: zStudentNumber,
         name: z.string().max(30),
         phoneNumber: zKrPhoneNumber,
       }),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg020.ts b/packages/interface/src/api/registration/endpoint/apiReg020.ts
index fcd341907..906a7ff63 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg020.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg020.ts
@@ -3,6 +3,7 @@ import { z } from "zod";
 
 import { zUserName } from "@sparcs-clubs/interface/common/commonString";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -41,7 +42,7 @@ const responseBodyMap = {
         isRegularMemberRegistration: z.coerce.boolean(),
         student: z.object({
           id: z.coerce.number().int().min(1),
-          studentNumber: z.coerce.number().int().min(1),
+          studentNumber: zStudentNumber,
           name: zUserName,
           phoneNumber: zKrPhoneNumber.optional(),
           email: z.string().email(),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg021.ts b/packages/interface/src/api/registration/endpoint/apiReg021.ts
index 2bd22ccd7..7261b9441 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg021.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg021.ts
@@ -7,6 +7,7 @@ import {
 } from "@sparcs-clubs/interface/common/commonString";
 import { RegistrationStatusEnum } from "@sparcs-clubs/interface/common/enum/registration.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -42,7 +43,7 @@ const responseBodyMap = {
         newClubNameEn: zClubName,
         student: z.object({
           id: z.coerce.number().int().min(1),
-          studentNumber: z.coerce.number().int().min(1),
+          studentNumber: zStudentNumber,
           name: zUserName,
           phoneNumber: zKrPhoneNumber.optional(),
           email: z.string(),
diff --git a/packages/interface/src/api/registration/endpoint/apiReg022.ts b/packages/interface/src/api/registration/endpoint/apiReg022.ts
index cd8d6e6ed..285955ac6 100644
--- a/packages/interface/src/api/registration/endpoint/apiReg022.ts
+++ b/packages/interface/src/api/registration/endpoint/apiReg022.ts
@@ -10,6 +10,7 @@ import {
 
 import { ProfessorEnum } from "@sparcs-clubs/interface/common/enum/user.enum";
 import { zKrPhoneNumber } from "@sparcs-clubs/interface/common/type/phoneNumber.type";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 import registrationTypeEnumChecker from "../utils/registrationTypeEnumChecker";
 
@@ -42,7 +43,7 @@ const responseBodyMap = {
       newClubNameKr: zClubName,
       newClubNameEn: zClubName,
       representative: z.object({
-        studentNumber: z.coerce.number().int().min(1),
+        studentNumber: zStudentNumber,
         name: z.string().max(30),
         phoneNumber: zKrPhoneNumber,
       }),
diff --git a/packages/interface/src/api/user/endpoint/apiUsr001.ts b/packages/interface/src/api/user/endpoint/apiUsr001.ts
index 517704d53..630585052 100644
--- a/packages/interface/src/api/user/endpoint/apiUsr001.ts
+++ b/packages/interface/src/api/user/endpoint/apiUsr001.ts
@@ -2,6 +2,7 @@ import { HttpStatusCode } from "axios";
 import { z } from "zod";
 
 import { zClubName } from "@sparcs-clubs/interface/common/commonString";
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
 
 /**
  * @version v0.1
@@ -30,7 +31,7 @@ const responseBodyMap = {
     name: z.string().max(30),
     email: z.string().max(50),
     department: z.string().max(10),
-    studentNumber: z.number().int().min(20000000).max(30000000),
+    studentNumber: zStudentNumber,
     phoneNumber: z.string().max(20).optional(),
   }),
 };
diff --git a/packages/interface/src/api/user/type/user.type.ts b/packages/interface/src/api/user/type/user.type.ts
index 1fb7955e8..6610641bc 100644
--- a/packages/interface/src/api/user/type/user.type.ts
+++ b/packages/interface/src/api/user/type/user.type.ts
@@ -1,9 +1,11 @@
 import { z } from "zod";
 
+import { zStudentNumber } from "@sparcs-clubs/interface/common/type/user.type";
+
 export const zStudent = z.object({
   id: z.number(),
   userId: z.number().optional(),
-  studentNumber: z.string(),
+  studentNumber: zStudentNumber,
   name: z.string(),
   email: z.string().optional(),
   phoneNumber: z.string().optional(),
@@ -19,7 +21,7 @@ export const zStudentSummary = zStudent.pick({
 export const zExecutive = z.object({
   id: z.number(),
   userId: z.number().optional(),
-  studentNumber: z.string(),
+  studentNumber: zStudentNumber,
   name: z.string(),
   email: z.string().optional(),
   phoneNumber: z.string().optional(),
diff --git a/packages/interface/src/common/type/user.type.ts b/packages/interface/src/common/type/user.type.ts
new file mode 100644
index 000000000..75e3e125e
--- /dev/null
+++ b/packages/interface/src/common/type/user.type.ts
@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+const zStudentNumber = z.string().min(6).max(8);
+
+type StudentNumber = z.infer<typeof zStudentNumber>;
+
+export { zStudentNumber };
+export type { StudentNumber };
diff --git a/packages/web/src/common/components/MyMenu/_atomic/Profile.tsx b/packages/web/src/common/components/MyMenu/_atomic/Profile.tsx
index fbc239413..4202f3cdc 100644
--- a/packages/web/src/common/components/MyMenu/_atomic/Profile.tsx
+++ b/packages/web/src/common/components/MyMenu/_atomic/Profile.tsx
@@ -8,7 +8,7 @@ import Typography from "@sparcs-clubs/web/common/components/Typography";
 
 interface ProfileProps {
   profileName: string;
-  profileNumber: number;
+  profileNumber: string;
   email: string;
   isSelected?: boolean;
   onClick: () => void;
@@ -46,7 +46,7 @@ const Profile: React.FC<ProfileProps> = ({
   isSelected = false,
   onClick,
 }) => {
-  const profileText = (number: number, mail: string) => {
+  const profileText = (number: string, mail: string) => {
     if (number && mail) return `${number} / ${mail}`;
     if (number === undefined || number === null) return `${mail}`;
     if (mail === undefined || mail === null || mail === "") return `${number}`;
diff --git a/packages/web/src/common/components/MyMenu/_atomic/ProfileList.tsx b/packages/web/src/common/components/MyMenu/_atomic/ProfileList.tsx
index 5ae8037e3..eb061de69 100644
--- a/packages/web/src/common/components/MyMenu/_atomic/ProfileList.tsx
+++ b/packages/web/src/common/components/MyMenu/_atomic/ProfileList.tsx
@@ -19,7 +19,7 @@ interface ProfileListProps {
 }
 
 interface DecodedToken extends JwtPayload {
-  studentNumber: number;
+  studentNumber: string;
   email: string;
 }
 
diff --git a/packages/web/src/common/services/_mock/mockupUserProfile.ts b/packages/web/src/common/services/_mock/mockupUserProfile.ts
index f944abbb8..bac73cceb 100644
--- a/packages/web/src/common/services/_mock/mockupUserProfile.ts
+++ b/packages/web/src/common/services/_mock/mockupUserProfile.ts
@@ -3,7 +3,7 @@ import type { ApiUsr001ResponseOK } from "@sparcs-clubs/interface/api/user/endpo
 const mockupUserProfile: ApiUsr001ResponseOK = {
   id: 1234,
   name: "넙죽이",
-  studentNumber: 23456789,
+  studentNumber: "23456789",
   clubs: [
     { id: 1, name_kr: "술박스", name_en: "술박스" },
     { id: 2, name_kr: "동연", name_en: "동연" },
diff --git a/packages/web/src/features/activity-certificate/services/_mock/mockupUserInfo.ts b/packages/web/src/features/activity-certificate/services/_mock/mockupUserInfo.ts
index bae17fee5..65feb9d0c 100644
--- a/packages/web/src/features/activity-certificate/services/_mock/mockupUserInfo.ts
+++ b/packages/web/src/features/activity-certificate/services/_mock/mockupUserInfo.ts
@@ -8,7 +8,7 @@ TODO - 유저 데이터를 가져오는 api가 나오면 그걸 기반으로 아
 import type { ApiAcf001ResponseCreated } from "@sparcs-clubs/interface/api/activity-certificate/endpoint/apiAcf001";
 
 const mockupUserInfo: ApiAcf001ResponseCreated = {
-  studentNumber: 20239999,
+  studentNumber: "20239999",
   krPhoneNumber: "01012345678",
   department: "Department of Computing",
   issuedNumber: 1234, // 이건 무슨 넘버죠?
diff --git a/packages/web/src/features/activity-certificate/types/activityCertificate.ts b/packages/web/src/features/activity-certificate/types/activityCertificate.ts
index 14930515d..a7158d181 100644
--- a/packages/web/src/features/activity-certificate/types/activityCertificate.ts
+++ b/packages/web/src/features/activity-certificate/types/activityCertificate.ts
@@ -4,7 +4,7 @@ export interface ActivityBasicInfo {
   issuedNumber: number;
   applicantName: string;
   applicantDepartment: string;
-  applicantStudentNumber: number;
+  applicantStudentNumber: string;
   applicantPhoneNumber: string;
 }
 
diff --git a/packages/web/src/features/activity-report/_mock/activityReportList.ts b/packages/web/src/features/activity-report/_mock/activityReportList.ts
index 988802e36..0fb8211a1 100644
--- a/packages/web/src/features/activity-report/_mock/activityReportList.ts
+++ b/packages/web/src/features/activity-report/_mock/activityReportList.ts
@@ -17,9 +17,9 @@ export const mockActivityReportData = [
     detail: "Python 기초 문법부터 알고리즘까지 단계별 교육",
     evidence: "출석부, 강의자료",
     participants: [
-      { id: 1, name: "김철수", studentNumber: 20240001 },
-      { id: 2, name: "이영희", studentNumber: 20240002 },
-      { id: 3, name: "박지민", studentNumber: 20240003 },
+      { id: 1, name: "김철수", studentNumber: "20240001" },
+      { id: 2, name: "이영희", studentNumber: "20240002" },
+      { id: 3, name: "박지민", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -41,8 +41,8 @@ export const mockActivityReportData = [
     detail: "React 커뮤니티 버그 수정 및 문서화 작업",
     evidence: "Github PR 내역",
     participants: [
-      { id: 1, name: "장민수", studentNumber: 20240001 },
-      { id: 2, name: "김도현", studentNumber: 20240002 },
+      { id: 1, name: "장민수", studentNumber: "20240001" },
+      { id: 2, name: "김도현", studentNumber: "20240002" },
     ],
     durations: [
       {
@@ -64,8 +64,8 @@ export const mockActivityReportData = [
     detail: "기존 홈페이지 리뉴얼 및 기능 개선",
     evidence: "기획서, 개발 문서",
     participants: [
-      { id: 1, name: "이지원", studentNumber: 20240001 },
-      { id: 2, name: "박현우", studentNumber: 20240002 },
+      { id: 1, name: "이지원", studentNumber: "20240001" },
+      { id: 2, name: "박현우", studentNumber: "20240002" },
     ],
     durations: [
       {
@@ -87,9 +87,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -119,8 +119,8 @@ export const mockActivityReportData = [
     detail: "알고리즘 대회 개최 및 운영",
     evidence: "대회 결과물, 시상 내역",
     participants: [
-      { id: 1, name: "현빈", studentNumber: 20240001 },
-      { id: 2, name: "송혜교", studentNumber: 20240002 },
+      { id: 1, name: "현빈", studentNumber: "20240001" },
+      { id: 2, name: "송혜교", studentNumber: "20240002" },
     ],
     durations: [
       {
@@ -142,9 +142,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -166,9 +166,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -198,9 +198,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -222,9 +222,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -246,9 +246,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -270,9 +270,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -294,9 +294,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -318,9 +318,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -354,9 +354,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -378,9 +378,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -402,9 +402,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -442,9 +442,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
@@ -466,9 +466,9 @@ export const mockActivityReportData = [
     detail: "최신 AI 기술 학습 및 실습",
     evidence: "발표자료, 실습 결과물",
     participants: [
-      { id: 1, name: "김태희", studentNumber: 20240001 },
-      { id: 2, name: "정우성", studentNumber: 20240002 },
-      { id: 3, name: "손예진", studentNumber: 20240003 },
+      { id: 1, name: "김태희", studentNumber: "20240001" },
+      { id: 2, name: "정우성", studentNumber: "20240002" },
+      { id: 3, name: "손예진", studentNumber: "20240003" },
     ],
     durations: [
       {
diff --git a/packages/web/src/features/activity-report/_mock/mock.ts b/packages/web/src/features/activity-report/_mock/mock.ts
index d02ee3a1f..62745dc31 100644
--- a/packages/web/src/features/activity-report/_mock/mock.ts
+++ b/packages/web/src/features/activity-report/_mock/mock.ts
@@ -11,7 +11,7 @@ import { ActivityProfessorApprovalEnum } from "@sparcs-clubs/web/features/manage
 
 export interface ParticipantTemp {
   id: number; // 고유 ID
-  studentNumber: number; // 학번
+  studentNumber: string; // 학번
   name: string; // 이름
 }
 
@@ -253,22 +253,22 @@ export const mockActivityDetailData: ApiAct002ResponseOkTemp = {
   participants: [
     {
       id: 1,
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       name: "이지윤",
     },
     {
       id: 2,
-      studentNumber: 20200511,
+      studentNumber: "20200511",
       name: "박병찬",
     },
     {
       id: 3,
-      studentNumber: 20230510,
+      studentNumber: "20230510",
       name: "이도라",
     },
     {
       id: 4,
-      studentNumber: 20240510,
+      studentNumber: "20240510",
       name: "스팍스",
     },
   ],
diff --git a/packages/web/src/features/activity-report/services/useGetActivityReport.tsx b/packages/web/src/features/activity-report/services/useGetActivityReport.tsx
index 081a22516..faaa317cb 100644
--- a/packages/web/src/features/activity-report/services/useGetActivityReport.tsx
+++ b/packages/web/src/features/activity-report/services/useGetActivityReport.tsx
@@ -57,17 +57,17 @@ defineAxiosMock(mock => {
       participants: [
         {
           studentId: 20200515,
-          studentNumber: 20200515,
+          studentNumber: "20200515",
           name: "이지윤",
         },
         {
           studentId: 20200513,
-          studentNumber: 20200513,
+          studentNumber: "20200513",
           name: "박병찬",
         },
         {
           studentId: 20230512,
-          studentNumber: 20230512,
+          studentNumber: "20230512",
           name: "이도라",
         },
       ],
diff --git a/packages/web/src/features/manage-club/members/frames/_mock/mockMembers.ts b/packages/web/src/features/manage-club/members/frames/_mock/mockMembers.ts
index 1c95a2475..3832f8459 100644
--- a/packages/web/src/features/manage-club/members/frames/_mock/mockMembers.ts
+++ b/packages/web/src/features/manage-club/members/frames/_mock/mockMembers.ts
@@ -26,7 +26,7 @@ const mockRegisterMembers = {
       student: {
         id: 1,
         name: "이지윤",
-        studentNumber: 20200510,
+        studentNumber: "20200510",
         email: "nicolelee2001@kaist.ac.kr",
         phoneNumber: "010-1234-5678",
       },
@@ -38,7 +38,7 @@ const mockRegisterMembers = {
       student: {
         id: 1,
         name: "박지호",
-        studentNumber: 20200510,
+        studentNumber: "20200510",
         email: "nicolelee2001@kaist.ac.kr",
         phoneNumber: "010-1234-5678",
       },
@@ -50,7 +50,7 @@ const mockRegisterMembers = {
       student: {
         id: 1,
         name: "박병찬",
-        studentNumber: 20200510,
+        studentNumber: "20200510",
         email: "nicolelee2001@kaist.ac.kr",
         phoneNumber: "010-1234-5678",
       },
@@ -62,7 +62,7 @@ const mockRegisterMembers = {
       student: {
         id: 1,
         name: "이도라",
-        studentNumber: 20200510,
+        studentNumber: "20200510",
         email: "nicolelee2001@kaist.ac.kr",
         phoneNumber: "010-1234-5678",
       },
@@ -74,7 +74,7 @@ const mockRegisterMembers = {
       student: {
         id: 1,
         name: "이지윤",
-        studentNumber: 20200510,
+        studentNumber: "20200510",
         email: "nicolelee2001@kaist.ac.kr",
         phoneNumber: "010-1234-5678",
       },
@@ -85,80 +85,84 @@ const mockRegisterMembers = {
 const mockSemesterMembers = {
   members: [
     {
-      studentNumber: 20210001,
+      studentNumber: "20210001",
       name: "일지윤",
       email: "iljiyun_01@example.com",
     },
     {
-      studentNumber: 20210002,
+      studentNumber: "20210002",
       name: "이지윤",
       email: "leejiyun_02@example.com",
       phoneNumber: "010-1234-5678",
     },
     {
-      studentNumber: 20210003,
+      studentNumber: "20210003",
       name: "삼지윤",
       email: "samjiyun_03@example.com",
     },
     {
-      studentNumber: 20210004,
+      studentNumber: "20210004",
       name: "사지윤",
       email: "sajiyn_04@example.com",
       phoneNumber: "010-2345-6789",
     },
     {
-      studentNumber: 20210005,
+      studentNumber: "20210005",
       name: "오지윤",
       email: "ohjiyun_05@example.com",
     },
     {
-      studentNumber: 20210006,
+      studentNumber: "20210006",
       name: "일지윤",
       email: "iljiyun_06@example.com",
       phoneNumber: "010-3456-7890",
     },
     {
-      studentNumber: 20210007,
+      studentNumber: "20210007",
       name: "이지윤",
       email: "leejiyun_07@example.com",
     },
     {
-      studentNumber: 20210008,
+      studentNumber: "20210008",
       name: "삼지윤",
       email: "samjiyun_08@example.com",
       phoneNumber: "010-4567-8901",
     },
-    { studentNumber: 20210009, name: "사지윤", email: "sajiyn_09@example.com" },
     {
-      studentNumber: 20210010,
+      studentNumber: "20210009",
+      name: "사지윤",
+      email: "sajiyn_09@example.com",
+    },
+    {
+      studentNumber: "20210010",
       name: "오지윤",
       email: "ohjiyun_10@example.com",
       phoneNumber: "010-5678-9012",
     },
     {
-      studentNumber: 20210011,
+      studentNumber: "20210011",
       name: "일지윤",
       email: "iljiyun_11@example.com",
     },
     {
-      studentNumber: 20210012,
+      studentNumber: "20210012",
       name: "이지윤",
       email: "leejiyun_12@example.com",
       phoneNumber: "010-6789-0123",
     },
     {
-      studentNumber: 20210013,
+      studentNumber: "20210013",
       name: "삼지윤",
       email: "samjiyun_13@example.com",
     },
     {
-      studentNumber: 20210014,
+      studentNumber: "20210014",
       name: "사지윤",
       email: "sajiyn_14@example.com",
       phoneNumber: "010-7890-1234",
     },
     {
-      studentNumber: 20210015,
+      studentNumber: "20210015",
       name: "오지윤",
       email: "ohjiyun_15@example.com",
     },
diff --git a/packages/web/src/features/manage-club/services/_mock/mockDelegate.ts b/packages/web/src/features/manage-club/services/_mock/mockDelegate.ts
index 4be1bce14..90229394e 100644
--- a/packages/web/src/features/manage-club/services/_mock/mockDelegate.ts
+++ b/packages/web/src/features/manage-club/services/_mock/mockDelegate.ts
@@ -11,21 +11,21 @@ export const mockClubDelegates: ApiClb006ResponseOK = {
     {
       delegateEnumId: ClubDelegateEnum.Representative,
       studentId: 20200510,
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       name: "이지윤",
       phoneNumber: "010-1234-5678",
     },
     {
       delegateEnumId: ClubDelegateEnum.Delegate1,
       studentId: 20200511,
-      studentNumber: 20200511,
+      studentNumber: "20200511",
       name: "박지호",
       phoneNumber: "010-1234-5678",
     },
     {
       delegateEnumId: ClubDelegateEnum.Delegate2,
       studentId: 20200512,
-      studentNumber: 20200512,
+      studentNumber: "20200512",
       name: "박병찬",
       phoneNumber: "010-1234-5678",
     },
@@ -36,7 +36,7 @@ export const mockClubDelegateRequest: ApiClb011ResponseOk = {
   requests: [
     {
       studentId: 20200000,
-      studentNumber: 20200000,
+      studentNumber: "20200000",
       studentName: "이도라",
       clubDelegateChangeRequestStatusEnumId:
         ClubDelegateChangeRequestStatusEnum.Applied,
diff --git a/packages/web/src/features/manage-club/services/_mock/mockManageClub.ts b/packages/web/src/features/manage-club/services/_mock/mockManageClub.ts
index 3921541b1..afeadca1e 100644
--- a/packages/web/src/features/manage-club/services/_mock/mockManageClub.ts
+++ b/packages/web/src/features/manage-club/services/_mock/mockManageClub.ts
@@ -71,56 +71,56 @@ const mockClubMembers: ApiClb010ResponseOk = {
   members: [
     {
       studentId: 1,
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       name: "이지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 2,
-      studentNumber: 20200511,
+      studentNumber: "20200511",
       name: "박지호",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 3,
-      studentNumber: 20200512,
+      studentNumber: "20200512",
       name: "박병찬",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 4,
-      studentNumber: 20200001,
+      studentNumber: "20200001",
       name: "일지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 5,
-      studentNumber: 20200002,
+      studentNumber: "20200002",
       name: "이지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 6,
-      studentNumber: 20200003,
+      studentNumber: "20200003",
       name: "삼지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 7,
-      studentNumber: 20200004,
+      studentNumber: "20200004",
       name: "사지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
     },
     {
       studentId: 8,
-      studentNumber: 20200005,
+      studentNumber: "20200005",
       name: "오지윤",
       email: "test@kaist.ac.kr",
       phoneNumber: "010-1234-5678",
@@ -136,7 +136,7 @@ const mockupManageMems: ApiReg008ResponseOk["applies"][0][] = [
     student: {
       id: 1,
       name: "이지윤",
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       email: "nicolelee2001@kaist.ac.kr",
       phoneNumber: "XXX-XXXX-XXXX",
     },
@@ -148,7 +148,7 @@ const mockupManageMems: ApiReg008ResponseOk["applies"][0][] = [
     student: {
       id: 1,
       name: "박지호",
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       email: "nicolelee2001@kaist.ac.kr",
       phoneNumber: "XXX-XXXX-XXXX",
     },
@@ -160,7 +160,7 @@ const mockupManageMems: ApiReg008ResponseOk["applies"][0][] = [
     student: {
       id: 1,
       name: "박병찬",
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       email: "nicolelee2001@kaist.ac.kr",
       phoneNumber: "XXX-XXXX-XXXX",
     },
@@ -172,7 +172,7 @@ const mockupManageMems: ApiReg008ResponseOk["applies"][0][] = [
     student: {
       id: 1,
       name: "이도라",
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       email: "nicolelee2001@kaist.ac.kr",
       phoneNumber: "XXX-XXXX-XXXX",
     },
@@ -184,7 +184,7 @@ const mockupManageMems: ApiReg008ResponseOk["applies"][0][] = [
     student: {
       id: 1,
       name: "이지윤",
-      studentNumber: 20200510,
+      studentNumber: "20200510",
       email: "nicolelee2001@kaist.ac.kr",
       phoneNumber: "XXX-XXXX-XXXX",
     },
diff --git a/packages/web/src/features/my/services/_mock/mockMyClubRegisterDetail.ts b/packages/web/src/features/my/services/_mock/mockMyClubRegisterDetail.ts
index ebb68e4fc..325cfdd91 100644
--- a/packages/web/src/features/my/services/_mock/mockMyClubRegisterDetail.ts
+++ b/packages/web/src/features/my/services/_mock/mockMyClubRegisterDetail.ts
@@ -28,7 +28,7 @@ const mockMyClubRegisterDetail: MyClubRegistrationDetail = {
   clubNameEn: "sparcs",
   clubId: 1,
   representative: {
-    studentNumber: 1,
+    studentNumber: "20200000",
     name: "넙죽이",
   },
   phoneNumber: "010-1234-1234",
diff --git a/packages/web/src/features/my/services/_mock/mockMyDelegateChange.ts b/packages/web/src/features/my/services/_mock/mockMyDelegateChange.ts
index 571fc725f..ebb41cfd5 100644
--- a/packages/web/src/features/my/services/_mock/mockMyDelegateChange.ts
+++ b/packages/web/src/features/my/services/_mock/mockMyDelegateChange.ts
@@ -6,7 +6,7 @@ export const mockMyDelegateChange: ApiClb013ResponseOk = {
     {
       id: 1,
       prevStudentId: 20200000,
-      prevStudentNumber: 20200000,
+      prevStudentNumber: "20200000",
       prevStudentName: "이도라",
       clubId: 1,
       clubName: "술박스",
diff --git a/packages/web/src/features/my/services/_mock/mockMyRegister.ts b/packages/web/src/features/my/services/_mock/mockMyRegister.ts
index 7f9d8e9e9..6c86a1701 100644
--- a/packages/web/src/features/my/services/_mock/mockMyRegister.ts
+++ b/packages/web/src/features/my/services/_mock/mockMyRegister.ts
@@ -32,7 +32,7 @@ const mockProfClubRegister = {
       clubName: "술박스",
       student: {
         id: 1,
-        studentNumber: 20200000,
+        studentNumber: "20200000",
         name: "이지윤",
         phoneNumber: "000-0000-0000",
         email: "xxxxx@kaist.ac.kr",
diff --git a/packages/web/src/features/my/types/myClubRegistration.ts b/packages/web/src/features/my/types/myClubRegistration.ts
index 1ccec430e..75a0787f5 100644
--- a/packages/web/src/features/my/types/myClubRegistration.ts
+++ b/packages/web/src/features/my/types/myClubRegistration.ts
@@ -12,7 +12,7 @@ export interface MyClubRegistrationDetail {
   clubId?: number;
   clubNameKr: string;
   clubNameEn: string;
-  representative: { studentNumber: number; name: string };
+  representative: { studentNumber: string; name: string };
   phoneNumber: string;
   foundedAt: Date;
   divisionId: number;
diff --git a/packages/web/src/types/participant.ts b/packages/web/src/types/participant.ts
index b6324ae2c..f04447dbb 100644
--- a/packages/web/src/types/participant.ts
+++ b/packages/web/src/types/participant.ts
@@ -1,5 +1,5 @@
 export type Participant = {
   id: number;
-  studentNumber: number;
+  studentNumber: string;
   name: string;
 };