Q: Is 21,014,784 a Composite Number?

Why is 21,014,784 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 21,014,784 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 64 72 84 96 112 126 128 144 168 192 224 252 256 288 336 384 448 504 576 672 768 896 1,008 1,152 1,303 1,344 1,792 2,016 2,304 2,606 2,688 3,909 4,032 5,212 5,376 7,818 8,064 9,121 10,424 11,727 15,636 16,128 18,242 20,848 23,454 27,363 31,272 36,484 41,696 46,908 54,726 62,544 72,968 82,089 83,392 93,816 109,452 125,088 145,936 164,178 166,784 187,632 218,904 250,176 291,872 328,356 333,568 375,264 437,808 500,352 583,744 656,712 750,528 875,616 1,000,704 1,167,488 1,313,424 1,501,056 1,751,232 2,334,976 2,626,848 3,002,112 3,502,464 5,253,696 7,004,928 10,507,392 and 21,014,784, with no remainder.

Since 21,014,784 cannot be divided by just 1 and 21,014,784, 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).