Q: Is 21,548,208 a Composite Number?

Why is 21,548,208 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 21,548,208 can be evenly divided by 1 2 3 4 6 8 11 12 16 22 24 33 37 44 48 66 74 88 111 132 148 176 222 264 296 407 444 528 592 814 888 1,103 1,221 1,628 1,776 2,206 2,442 3,256 3,309 4,412 4,884 6,512 6,618 8,824 9,768 12,133 13,236 17,648 19,536 24,266 26,472 36,399 40,811 48,532 52,944 72,798 81,622 97,064 122,433 145,596 163,244 194,128 244,866 291,192 326,488 448,921 489,732 582,384 652,976 897,842 979,464 1,346,763 1,795,684 1,958,928 2,693,526 3,591,368 5,387,052 7,182,736 10,774,104 and 21,548,208, with no remainder.

Since 21,548,208 cannot be divided by just 1 and 21,548,208, 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).