Q: Is 21,187,224 a Composite Number?

Why is 21,187,224 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 21,187,224 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 27 36 47 54 72 94 108 141 188 216 282 376 423 564 846 1,128 1,269 1,692 2,087 2,538 3,384 4,174 5,076 6,261 8,348 10,152 12,522 16,696 18,783 25,044 37,566 50,088 56,349 75,132 98,089 112,698 150,264 196,178 225,396 294,267 392,356 450,792 588,534 784,712 882,801 1,177,068 1,765,602 2,354,136 2,648,403 3,531,204 5,296,806 7,062,408 10,593,612 and 21,187,224, with no remainder.

Since 21,187,224 cannot be divided by just 1 and 21,187,224, 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).