Q: Is 15,640,400 a Composite Number?

Why is 15,640,400 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 15,640,400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 61 80 100 122 200 244 305 400 488 610 641 976 1,220 1,282 1,525 2,440 2,564 3,050 3,205 4,880 5,128 6,100 6,410 10,256 12,200 12,820 16,025 24,400 25,640 32,050 39,101 51,280 64,100 78,202 128,200 156,404 195,505 256,400 312,808 391,010 625,616 782,020 977,525 1,564,040 1,955,050 3,128,080 3,910,100 7,820,200 and 15,640,400, with no remainder.

Since 15,640,400 cannot be divided by just 1 and 15,640,400, 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).