Q: Is 21,534,800 a Composite Number?

Why is 21,534,800 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 21,534,800 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 140 175 200 280 350 400 560 700 1,400 2,800 7,691 15,382 30,764 38,455 53,837 61,528 76,910 107,674 123,056 153,820 192,275 215,348 269,185 307,640 384,550 430,696 538,370 615,280 769,100 861,392 1,076,740 1,345,925 1,538,200 2,153,480 2,691,850 3,076,400 4,306,960 5,383,700 10,767,400 and 21,534,800, with no remainder.

Since 21,534,800 cannot be divided by just 1 and 21,534,800, 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).