Q: Is 1,445,840 a Composite Number?

Why is 1,445,840 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 1,445,840 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 31 40 44 53 55 62 80 88 106 110 124 155 176 212 220 248 265 310 341 424 440 496 530 583 620 682 848 880 1,060 1,166 1,240 1,364 1,643 1,705 2,120 2,332 2,480 2,728 2,915 3,286 3,410 4,240 4,664 5,456 5,830 6,572 6,820 8,215 9,328 11,660 13,144 13,640 16,430 18,073 23,320 26,288 27,280 32,860 36,146 46,640 65,720 72,292 90,365 131,440 144,584 180,730 289,168 361,460 722,920 and 1,445,840, with no remainder.

Since 1,445,840 cannot be divided by just 1 and 1,445,840, 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).