Q: Is 1,578,368 a Composite Number?

Why is 1,578,368 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 1,578,368 can be evenly divided by 1 2 4 8 11 16 19 22 32 38 44 59 64 76 88 118 128 152 176 209 236 304 352 418 472 608 649 704 836 944 1,121 1,216 1,298 1,408 1,672 1,888 2,242 2,432 2,596 3,344 3,776 4,484 5,192 6,688 7,552 8,968 10,384 12,331 13,376 17,936 20,768 24,662 26,752 35,872 41,536 49,324 71,744 83,072 98,648 143,488 197,296 394,592 789,184 and 1,578,368, with no remainder.

Since 1,578,368 cannot be divided by just 1 and 1,578,368, 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).