Q: Is 645,600 a Composite Number?

Why is 645,600 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 645,600 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 150 160 200 240 269 300 400 480 538 600 800 807 1,076 1,200 1,345 1,614 2,152 2,400 2,690 3,228 4,035 4,304 5,380 6,456 6,725 8,070 8,608 10,760 12,912 13,450 16,140 20,175 21,520 25,824 26,900 32,280 40,350 43,040 53,800 64,560 80,700 107,600 129,120 161,400 215,200 322,800 and 645,600, with no remainder.

Since 645,600 cannot be divided by just 1 and 645,600, 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).