Q: Is 20,525,220 a Composite Number?

Why is 20,525,220 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 20,525,220 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 101 180 202 303 404 505 606 909 1,010 1,129 1,212 1,515 1,818 2,020 2,258 3,030 3,387 3,636 4,516 4,545 5,645 6,060 6,774 9,090 10,161 11,290 13,548 16,935 18,180 20,322 22,580 33,870 40,644 50,805 67,740 101,610 114,029 203,220 228,058 342,087 456,116 570,145 684,174 1,026,261 1,140,290 1,368,348 1,710,435 2,052,522 2,280,580 3,420,870 4,105,044 5,131,305 6,841,740 10,262,610 and 20,525,220, with no remainder.

Since 20,525,220 cannot be divided by just 1 and 20,525,220, 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).