Q: Is 2,806,720 a Composite Number?

Why is 2,806,720 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 2,806,720 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 140 160 179 196 224 245 280 320 358 392 448 490 560 716 784 895 980 1,120 1,253 1,432 1,568 1,790 1,960 2,240 2,506 2,864 3,136 3,580 3,920 5,012 5,728 6,265 7,160 7,840 8,771 10,024 11,456 12,530 14,320 15,680 17,542 20,048 25,060 28,640 35,084 40,096 43,855 50,120 57,280 70,168 80,192 87,710 100,240 140,336 175,420 200,480 280,672 350,840 400,960 561,344 701,680 1,403,360 and 2,806,720, with no remainder.

Since 2,806,720 cannot be divided by just 1 and 2,806,720, 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).