Q: Is 1,620,648 a Composite Number?

Why is 1,620,648 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 1,620,648 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 27 36 41 54 61 72 81 82 108 122 123 162 164 183 216 244 246 324 328 366 369 488 492 549 648 732 738 984 1,098 1,107 1,464 1,476 1,647 2,196 2,214 2,501 2,952 3,294 3,321 4,392 4,428 4,941 5,002 6,588 6,642 7,503 8,856 9,882 10,004 13,176 13,284 15,006 19,764 20,008 22,509 26,568 30,012 39,528 45,018 60,024 67,527 90,036 135,054 180,072 202,581 270,108 405,162 540,216 810,324 and 1,620,648, with no remainder.

Since 1,620,648 cannot be divided by just 1 and 1,620,648, 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).