Q: Is 2,138,880 a Composite Number?

Why is 2,138,880 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 2,138,880 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 557 640 768 960 1,114 1,280 1,671 1,920 2,228 2,785 3,342 3,840 4,456 5,570 6,684 8,355 8,912 11,140 13,368 16,710 17,824 22,280 26,736 33,420 35,648 44,560 53,472 66,840 71,296 89,120 106,944 133,680 142,592 178,240 213,888 267,360 356,480 427,776 534,720 712,960 1,069,440 and 2,138,880, with no remainder.

Since 2,138,880 cannot be divided by just 1 and 2,138,880, 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).