Q: Is 21,235,320 a Composite Number?

Why is 21,235,320 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 21,235,320 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 61 72 90 120 122 180 183 244 305 360 366 488 549 610 732 915 967 1,098 1,220 1,464 1,830 1,934 2,196 2,440 2,745 2,901 3,660 3,868 4,392 4,835 5,490 5,802 7,320 7,736 8,703 9,670 10,980 11,604 14,505 17,406 19,340 21,960 23,208 29,010 34,812 38,680 43,515 58,020 58,987 69,624 87,030 116,040 117,974 174,060 176,961 235,948 294,935 348,120 353,922 471,896 530,883 589,870 707,844 884,805 1,061,766 1,179,740 1,415,688 1,769,610 2,123,532 2,359,480 2,654,415 3,539,220 4,247,064 5,308,830 7,078,440 10,617,660 and 21,235,320, with no remainder.

Since 21,235,320 cannot be divided by just 1 and 21,235,320, 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).