Q: Is 1,851,720 a Composite Number?

Why is 1,851,720 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 1,851,720 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 195 260 312 390 520 780 1,187 1,560 2,374 3,561 4,748 5,935 7,122 9,496 11,870 14,244 15,431 17,805 23,740 28,488 30,862 35,610 46,293 47,480 61,724 71,220 77,155 92,586 123,448 142,440 154,310 185,172 231,465 308,620 370,344 462,930 617,240 925,860 and 1,851,720, with no remainder.

Since 1,851,720 cannot be divided by just 1 and 1,851,720, 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).