Q: Is 1,555,680 a Composite Number?

Why is 1,555,680 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 1,555,680 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 463 480 560 672 840 926 1,120 1,389 1,680 1,852 2,315 2,778 3,241 3,360 3,704 4,630 5,556 6,482 6,945 7,408 9,260 9,723 11,112 12,964 13,890 14,816 16,205 18,520 19,446 22,224 25,928 27,780 32,410 37,040 38,892 44,448 48,615 51,856 55,560 64,820 74,080 77,784 97,230 103,712 111,120 129,640 155,568 194,460 222,240 259,280 311,136 388,920 518,560 777,840 and 1,555,680, with no remainder.

Since 1,555,680 cannot be divided by just 1 and 1,555,680, 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).