Q: Is 7,857,500 a Composite Number?

Why is 7,857,500 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 7,857,500 can be evenly divided by 1 2 4 5 7 10 14 20 25 28 35 50 70 100 125 140 175 250 350 449 500 625 700 875 898 1,250 1,750 1,796 2,245 2,500 3,143 3,500 4,375 4,490 6,286 8,750 8,980 11,225 12,572 15,715 17,500 22,450 31,430 44,900 56,125 62,860 78,575 112,250 157,150 224,500 280,625 314,300 392,875 561,250 785,750 1,122,500 1,571,500 1,964,375 3,928,750 and 7,857,500, with no remainder.

Since 7,857,500 cannot be divided by just 1 and 7,857,500, 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).