When to use number in Korean
Korean: 번호[ beon-ho ]

When to use it
The word "number" means a numeral or a set of digits used to identify something. In Korean, 번호 often means a phone number, seat number, bus number, or student number. You use it when you ask for or tell the number of something in everyday life. At school, it can also mean your class number or student number.
Example sentences
제 번호는 12번이에요.
My number is 12.
선생님이 학생 번호를 불렀어요.
The teacher called the student number.
전화번호를 다시 말해 주세요.
Please say the phone number again.
이 버스 번호는 5번이에요.
This bus number is 5.
가게 번호로 전화했어요.
I called the store's number.
표에 좌석 번호가 있어요.
There is a seat number on the ticket.