Q: Is 20,640 a Composite Number?

 A: Yes, 20,640 is a composite number.

Why is 20,640 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 20,640 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 43 48 60 80 86 96 120 129 160 172 215 240 258 344 430 480 516 645 688 860 1,032 1,290 1,376 1,720 2,064 2,580 3,440 4,128 5,160 6,880 10,320 and 20,640, with no remainder.

Since 20,640 cannot be divided by just 1 and 20,640, it is a composite number.


More Examples

Number 20,63820,63920,64120,642
Composite? yesnonoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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