Q: Is 1,621,270 a Composite Number?

Why is 1,621,270 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 1,621,270 can be evenly divided by 1 2 5 7 10 14 19 23 35 38 46 53 70 95 106 115 133 161 190 230 265 266 322 371 437 530 665 742 805 874 1,007 1,219 1,330 1,610 1,855 2,014 2,185 2,438 3,059 3,710 4,370 5,035 6,095 6,118 7,049 8,533 10,070 12,190 14,098 15,295 17,066 23,161 30,590 35,245 42,665 46,322 70,490 85,330 115,805 162,127 231,610 324,254 810,635 and 1,621,270, with no remainder.

Since 1,621,270 cannot be divided by just 1 and 1,621,270, 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).