Q: Is 2,187,810 a Composite Number?

Why is 2,187,810 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 2,187,810 can be evenly divided by 1 2 3 5 6 9 10 15 18 27 30 37 45 54 73 74 81 90 111 135 146 162 185 219 222 270 333 365 370 405 438 555 657 666 730 810 999 1,095 1,110 1,314 1,665 1,971 1,998 2,190 2,701 2,997 3,285 3,330 3,942 4,995 5,402 5,913 5,994 6,570 8,103 9,855 9,990 11,826 13,505 14,985 16,206 19,710 24,309 27,010 29,565 29,970 40,515 48,618 59,130 72,927 81,030 121,545 145,854 218,781 243,090 364,635 437,562 729,270 1,093,905 and 2,187,810, with no remainder.

Since 2,187,810 cannot be divided by just 1 and 2,187,810, 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).