Q: Is 21,425,460 a Composite Number?

Why is 21,425,460 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 21,425,460 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 139 140 210 278 367 417 420 556 695 734 834 973 1,101 1,390 1,468 1,668 1,835 1,946 2,085 2,202 2,569 2,780 2,919 3,670 3,892 4,170 4,404 4,865 5,138 5,505 5,838 7,340 7,707 8,340 9,730 10,276 11,010 11,676 12,845 14,595 15,414 19,460 22,020 25,690 29,190 30,828 38,535 51,013 51,380 58,380 77,070 102,026 153,039 154,140 204,052 255,065 306,078 357,091 510,130 612,156 714,182 765,195 1,020,260 1,071,273 1,428,364 1,530,390 1,785,455 2,142,546 3,060,780 3,570,910 4,285,092 5,356,365 7,141,820 10,712,730 and 21,425,460, with no remainder.

Since 21,425,460 cannot be divided by just 1 and 21,425,460, 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).