Q: Is 1,623,680 a Composite Number?

Why is 1,623,680 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 1,623,680 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 43 59 64 80 86 118 128 160 172 215 236 295 320 344 430 472 590 640 688 860 944 1,180 1,376 1,720 1,888 2,360 2,537 2,752 3,440 3,776 4,720 5,074 5,504 6,880 7,552 9,440 10,148 12,685 13,760 18,880 20,296 25,370 27,520 37,760 40,592 50,740 81,184 101,480 162,368 202,960 324,736 405,920 811,840 and 1,623,680, with no remainder.

Since 1,623,680 cannot be divided by just 1 and 1,623,680, 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).