Q: Is 21,728,460 a Composite Number?

Why is 21,728,460 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 21,728,460 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 89 130 156 178 195 260 267 313 356 390 445 534 626 780 890 939 1,068 1,157 1,252 1,335 1,565 1,780 1,878 2,314 2,670 3,130 3,471 3,756 4,069 4,628 4,695 5,340 5,785 6,260 6,942 8,138 9,390 11,570 12,207 13,884 16,276 17,355 18,780 20,345 23,140 24,414 27,857 34,710 40,690 48,828 55,714 61,035 69,420 81,380 83,571 111,428 122,070 139,285 167,142 244,140 278,570 334,284 362,141 417,855 557,140 724,282 835,710 1,086,423 1,448,564 1,671,420 1,810,705 2,172,846 3,621,410 4,345,692 5,432,115 7,242,820 10,864,230 and 21,728,460, with no remainder.

Since 21,728,460 cannot be divided by just 1 and 21,728,460, 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).