Q: Is 21,672 a Composite Number?
A: Yes, 21,672 is a composite number.
The number 21,672 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 43 56 63 72 84 86 126 129 168 172 252 258 301 344 387 504 516 602 774 903 1,032 1,204 1,548 1,806 2,408 2,709 3,096 3,612 5,418 7,224 10,836 and 21,672, with no remainder.
Since 21,672 cannot be divided by just 1 and 21,672, it is a composite number.