Q: Is 21,165,200 a Composite Number?

Why is 21,165,200 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 21,165,200 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 140 175 200 280 350 400 560 700 1,400 2,800 7,559 15,118 30,236 37,795 52,913 60,472 75,590 105,826 120,944 151,180 188,975 211,652 264,565 302,360 377,950 423,304 529,130 604,720 755,900 846,608 1,058,260 1,322,825 1,511,800 2,116,520 2,645,650 3,023,600 4,233,040 5,291,300 10,582,600 and 21,165,200, with no remainder.

Since 21,165,200 cannot be divided by just 1 and 21,165,200, 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).