Q: Is 21,412,020 a Composite Number?

Why is 21,412,020 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 21,412,020 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1,470 2,940 7,283 14,566 21,849 29,132 36,415 43,698 50,981 72,830 87,396 101,962 109,245 145,660 152,943 203,924 218,490 254,905 305,886 356,867 436,980 509,810 611,772 713,734 764,715 1,019,620 1,070,601 1,427,468 1,529,430 1,784,335 2,141,202 3,058,860 3,568,670 4,282,404 5,353,005 7,137,340 10,706,010 and 21,412,020, with no remainder.

Since 21,412,020 cannot be divided by just 1 and 21,412,020, 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).