Q: Is 21,329,672 a Composite Number?

Why is 21,329,672 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 21,329,672 can be evenly divided by 1 2 4 7 8 13 14 26 28 52 56 83 91 104 166 182 332 353 364 581 664 706 728 1,079 1,162 1,412 2,158 2,324 2,471 2,824 4,316 4,589 4,648 4,942 7,553 8,632 9,178 9,884 15,106 18,356 19,768 29,299 30,212 32,123 36,712 58,598 60,424 64,246 117,196 128,492 205,093 234,392 256,984 380,887 410,186 761,774 820,372 1,523,548 1,640,744 2,666,209 3,047,096 5,332,418 10,664,836 and 21,329,672, with no remainder.

Since 21,329,672 cannot be divided by just 1 and 21,329,672, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).