Q: Is 18,007,020 a Composite Number?

Why is 18,007,020 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 18,007,020 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 71 90 142 180 213 284 355 426 639 710 852 1,065 1,278 1,409 1,420 2,130 2,556 2,818 3,195 4,227 4,260 5,636 6,390 7,045 8,454 12,681 12,780 14,090 16,908 21,135 25,362 28,180 42,270 50,724 63,405 84,540 100,039 126,810 200,078 253,620 300,117 400,156 500,195 600,234 900,351 1,000,390 1,200,468 1,500,585 1,800,702 2,000,780 3,001,170 3,601,404 4,501,755 6,002,340 9,003,510 and 18,007,020, with no remainder.

Since 18,007,020 cannot be divided by just 1 and 18,007,020, 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).