Q: Is 21,370,860 a Composite Number?

Why is 21,370,860 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 21,370,860 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 49 60 63 70 84 90 98 105 126 140 147 180 196 210 245 252 294 315 420 441 490 588 630 735 882 980 1,260 1,470 1,764 2,205 2,423 2,940 4,410 4,846 7,269 8,820 9,692 12,115 14,538 16,961 21,807 24,230 29,076 33,922 36,345 43,614 48,460 50,883 67,844 72,690 84,805 87,228 101,766 109,035 118,727 145,380 152,649 169,610 203,532 218,070 237,454 254,415 305,298 339,220 356,181 436,140 474,908 508,830 593,635 610,596 712,362 763,245 1,017,660 1,068,543 1,187,270 1,424,724 1,526,490 1,780,905 2,137,086 2,374,540 3,052,980 3,561,810 4,274,172 5,342,715 7,123,620 10,685,430 and 21,370,860, with no remainder.

Since 21,370,860 cannot be divided by just 1 and 21,370,860, 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).