Q: Is 21,210,768 a Composite Number?

Why is 21,210,768 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 21,210,768 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 27 36 37 48 54 72 74 108 111 144 148 216 222 296 333 432 444 592 666 888 999 1,327 1,332 1,776 1,998 2,654 2,664 3,981 3,996 5,308 5,328 7,962 7,992 10,616 11,943 15,924 15,984 21,232 23,886 31,848 35,829 47,772 49,099 63,696 71,658 95,544 98,198 143,316 147,297 191,088 196,396 286,632 294,594 392,792 441,891 573,264 589,188 785,584 883,782 1,178,376 1,325,673 1,767,564 2,356,752 2,651,346 3,535,128 5,302,692 7,070,256 10,605,384 and 21,210,768, with no remainder.

Since 21,210,768 cannot be divided by just 1 and 21,210,768, 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).