Q: Is 678,240 a Composite Number?

Why is 678,240 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 678,240 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 90 96 108 120 135 144 157 160 180 216 240 270 288 314 360 432 471 480 540 628 720 785 864 942 1,080 1,256 1,413 1,440 1,570 1,884 2,160 2,355 2,512 2,826 3,140 3,768 4,239 4,320 4,710 5,024 5,652 6,280 7,065 7,536 8,478 9,420 11,304 12,560 14,130 15,072 16,956 18,840 21,195 22,608 25,120 28,260 33,912 37,680 42,390 45,216 56,520 67,824 75,360 84,780 113,040 135,648 169,560 226,080 339,120 and 678,240, with no remainder.

Since 678,240 cannot be divided by just 1 and 678,240, 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).