Q: Is 21,618 a Composite Number?
A: Yes, 21,618 is a composite number.
The number 21,618 can be evenly divided by 1 2 3 6 9 18 1,201 2,402 3,603 7,206 10,809 and 21,618, with no remainder.
Since 21,618 cannot be divided by just 1 and 21,618, it is a composite number.