Q: Is 1,623,440 a Composite Number?

Why is 1,623,440 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 1,623,440 can be evenly divided by 1 2 4 5 7 8 10 13 14 16 20 26 28 35 40 52 56 65 70 80 91 104 112 130 140 182 208 223 260 280 364 446 455 520 560 728 892 910 1,040 1,115 1,456 1,561 1,784 1,820 2,230 2,899 3,122 3,568 3,640 4,460 5,798 6,244 7,280 7,805 8,920 11,596 12,488 14,495 15,610 17,840 20,293 23,192 24,976 28,990 31,220 40,586 46,384 57,980 62,440 81,172 101,465 115,960 124,880 162,344 202,930 231,920 324,688 405,860 811,720 and 1,623,440, with no remainder.

Since 1,623,440 cannot be divided by just 1 and 1,623,440, 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).