Q: Is 2,161,920 a Composite Number?

Why is 2,161,920 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 2,161,920 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 96 120 128 160 192 240 256 320 384 480 563 640 768 960 1,126 1,280 1,689 1,920 2,252 2,815 3,378 3,840 4,504 5,630 6,756 8,445 9,008 11,260 13,512 16,890 18,016 22,520 27,024 33,780 36,032 45,040 54,048 67,560 72,064 90,080 108,096 135,120 144,128 180,160 216,192 270,240 360,320 432,384 540,480 720,640 1,080,960 and 2,161,920, with no remainder.

Since 2,161,920 cannot be divided by just 1 and 2,161,920, 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).