Q: Is 1,621,970 a Composite Number?

Why is 1,621,970 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 1,621,970 can be evenly divided by 1 2 5 7 10 14 17 29 34 35 47 58 70 85 94 119 145 170 203 235 238 290 329 406 470 493 595 658 799 986 1,015 1,190 1,363 1,598 1,645 2,030 2,465 2,726 3,290 3,451 3,995 4,930 5,593 6,815 6,902 7,990 9,541 11,186 13,630 17,255 19,082 23,171 27,965 34,510 46,342 47,705 55,930 95,410 115,855 162,197 231,710 324,394 810,985 and 1,621,970, with no remainder.

Since 1,621,970 cannot be divided by just 1 and 1,621,970, 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).