Q: Is 2,649,780 a Composite Number?

Why is 2,649,780 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 2,649,780 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 54 60 63 70 84 90 105 108 126 135 140 180 189 210 252 270 315 378 420 540 630 701 756 945 1,260 1,402 1,890 2,103 2,804 3,505 3,780 4,206 4,907 6,309 7,010 8,412 9,814 10,515 12,618 14,020 14,721 18,927 19,628 21,030 24,535 25,236 29,442 31,545 37,854 42,060 44,163 49,070 58,884 63,090 73,605 75,708 88,326 94,635 98,140 126,180 132,489 147,210 176,652 189,270 220,815 264,978 294,420 378,540 441,630 529,956 662,445 883,260 1,324,890 and 2,649,780, with no remainder.

Since 2,649,780 cannot be divided by just 1 and 2,649,780, 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).