Q: Is 320,400 a Composite Number?

Why is 320,400 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 320,400 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 36 40 45 48 50 60 72 75 80 89 90 100 120 144 150 178 180 200 225 240 267 300 356 360 400 445 450 534 600 712 720 801 890 900 1,068 1,200 1,335 1,424 1,602 1,780 1,800 2,136 2,225 2,670 3,204 3,560 3,600 4,005 4,272 4,450 5,340 6,408 6,675 7,120 8,010 8,900 10,680 12,816 13,350 16,020 17,800 20,025 21,360 26,700 32,040 35,600 40,050 53,400 64,080 80,100 106,800 160,200 and 320,400, with no remainder.

Since 320,400 cannot be divided by just 1 and 320,400, 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).