Q: Is 3,221,120 a Composite Number?

Why is 3,221,120 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 3,221,120 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 280 320 448 560 640 719 896 1,120 1,438 2,240 2,876 3,595 4,480 5,033 5,752 7,190 10,066 11,504 14,380 20,132 23,008 25,165 28,760 40,264 46,016 50,330 57,520 80,528 92,032 100,660 115,040 161,056 201,320 230,080 322,112 402,640 460,160 644,224 805,280 1,610,560 and 3,221,120, with no remainder.

Since 3,221,120 cannot be divided by just 1 and 3,221,120, 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).