Q: Is 624,780 a Composite Number?

Why is 624,780 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 624,780 can be evenly divided by 1 2 3 4 5 6 9 10 12 13 15 18 20 26 27 30 36 39 45 52 54 60 65 78 89 90 108 117 130 135 156 178 180 195 234 260 267 270 351 356 390 445 468 534 540 585 702 780 801 890 1,068 1,157 1,170 1,335 1,404 1,602 1,755 1,780 2,314 2,340 2,403 2,670 3,204 3,471 3,510 4,005 4,628 4,806 5,340 5,785 6,942 7,020 8,010 9,612 10,413 11,570 12,015 13,884 16,020 17,355 20,826 23,140 24,030 31,239 34,710 41,652 48,060 52,065 62,478 69,420 104,130 124,956 156,195 208,260 312,390 and 624,780, with no remainder.

Since 624,780 cannot be divided by just 1 and 624,780, 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).