Q: Is 20,221,120 a Composite Number?

Why is 20,221,120 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 20,221,120 can be evenly divided by 1 2 4 5 8 10 16 20 29 32 40 58 64 80 116 145 160 232 290 320 464 580 928 1,160 1,856 2,179 2,320 4,358 4,640 8,716 9,280 10,895 17,432 21,790 34,864 43,580 63,191 69,728 87,160 126,382 139,456 174,320 252,764 315,955 348,640 505,528 631,910 697,280 1,011,056 1,263,820 2,022,112 2,527,640 4,044,224 5,055,280 10,110,560 and 20,221,120, with no remainder.

Since 20,221,120 cannot be divided by just 1 and 20,221,120, 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).