Q: Is 21,168 a Composite Number?
A: Yes, 21,168 is a composite number.
The number 21,168 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 84 98 108 112 126 144 147 168 189 196 216 252 294 336 378 392 432 441 504 588 756 784 882 1,008 1,176 1,323 1,512 1,764 2,352 2,646 3,024 3,528 5,292 7,056 10,584 and 21,168, with no remainder.
Since 21,168 cannot be divided by just 1 and 21,168, it is a composite number.