Q: Is 21,440 a Composite Number?

 A: Yes, 21,440 is a composite number.

Why is 21,440 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 21,440 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 67 80 134 160 268 320 335 536 670 1,072 1,340 2,144 2,680 4,288 5,360 10,720 and 21,440, with no remainder.

Since 21,440 cannot be divided by just 1 and 21,440, it is a composite number.


More Examples

Number 21,43821,43921,44121,442
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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