Q: Is 21,816 a Composite Number?

 A: Yes, 21,816 is a composite number.

Why is 21,816 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 21,816 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 27 36 54 72 101 108 202 216 303 404 606 808 909 1,212 1,818 2,424 2,727 3,636 5,454 7,272 10,908 and 21,816, with no remainder.

Since 21,816 cannot be divided by just 1 and 21,816, it is a composite number.


More Examples

Number 21,81421,81521,81721,818
Composite? yesyesnoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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