Q: Is 721,800 a Composite Number?

Why is 721,800 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 721,800 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 150 180 200 225 300 360 401 450 600 802 900 1,203 1,604 1,800 2,005 2,406 3,208 3,609 4,010 4,812 6,015 7,218 8,020 9,624 10,025 12,030 14,436 16,040 18,045 20,050 24,060 28,872 30,075 36,090 40,100 48,120 60,150 72,180 80,200 90,225 120,300 144,360 180,450 240,600 360,900 and 721,800, with no remainder.

Since 721,800 cannot be divided by just 1 and 721,800, 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).