Q: Is 1,620,864 a Composite Number?

Why is 1,620,864 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 1,620,864 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 67 72 84 96 108 112 126 128 134 144 168 189 192 201 216 224 252 268 288 336 378 384 402 432 448 469 504 536 576 603 672 756 804 864 896 938 1,008 1,072 1,152 1,206 1,344 1,407 1,512 1,608 1,728 1,809 1,876 2,016 2,144 2,412 2,688 2,814 3,024 3,216 3,456 3,618 3,752 4,032 4,221 4,288 4,824 5,628 6,048 6,432 7,236 7,504 8,064 8,442 8,576 9,648 11,256 12,096 12,663 12,864 14,472 15,008 16,884 19,296 22,512 24,192 25,326 25,728 28,944 30,016 33,768 38,592 45,024 50,652 57,888 60,032 67,536 77,184 90,048 101,304 115,776 135,072 180,096 202,608 231,552 270,144 405,216 540,288 810,432 and 1,620,864, with no remainder.

Since 1,620,864 cannot be divided by just 1 and 1,620,864, 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).