Q: Is 21,660,750 a Composite Number?

Why is 21,660,750 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 21,660,750 can be evenly divided by 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 90 125 135 150 225 250 270 375 450 675 750 1,125 1,350 2,250 3,209 3,375 6,418 6,750 9,627 16,045 19,254 28,881 32,090 48,135 57,762 80,225 86,643 96,270 144,405 160,450 173,286 240,675 288,810 401,125 433,215 481,350 722,025 802,250 866,430 1,203,375 1,444,050 2,166,075 2,406,750 3,610,125 4,332,150 7,220,250 10,830,375 and 21,660,750, with no remainder.

Since 21,660,750 cannot be divided by just 1 and 21,660,750, 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).