Q: Is 20,551,428 a Composite Number?

Why is 20,551,428 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 20,551,428 can be evenly divided by 1 2 3 4 6 9 12 18 27 36 37 54 74 108 111 139 148 222 278 333 417 444 556 666 834 999 1,251 1,332 1,369 1,668 1,998 2,502 2,738 3,753 3,996 4,107 5,004 5,143 5,476 7,506 8,214 10,286 12,321 15,012 15,429 16,428 20,572 24,642 30,858 36,963 46,287 49,284 61,716 73,926 92,574 138,861 147,852 185,148 190,291 277,722 380,582 555,444 570,873 761,164 1,141,746 1,712,619 2,283,492 3,425,238 5,137,857 6,850,476 10,275,714 and 20,551,428, with no remainder.

Since 20,551,428 cannot be divided by just 1 and 20,551,428, 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).