Q: Is 18,878,670 a Composite Number?

Why is 18,878,670 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 18,878,670 can be evenly divided by 1 2 3 5 6 9 10 15 17 18 27 30 34 45 51 54 81 85 90 102 135 153 162 170 243 255 270 306 405 457 459 486 510 765 810 914 918 1,215 1,371 1,377 1,530 2,285 2,295 2,430 2,742 2,754 4,113 4,131 4,570 4,590 6,855 6,885 7,769 8,226 8,262 12,339 13,710 13,770 15,538 20,565 20,655 23,307 24,678 37,017 38,845 41,130 41,310 46,614 61,695 69,921 74,034 77,690 111,051 116,535 123,390 139,842 185,085 209,763 222,102 233,070 349,605 370,170 419,526 555,255 629,289 699,210 1,048,815 1,110,510 1,258,578 1,887,867 2,097,630 3,146,445 3,775,734 6,292,890 9,439,335 and 18,878,670, with no remainder.

Since 18,878,670 cannot be divided by just 1 and 18,878,670, 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).