Q: Is 644,400 a Composite Number?

Why is 644,400 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 644,400 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 90 100 120 144 150 179 180 200 225 240 300 358 360 400 450 537 600 716 720 895 900 1,074 1,200 1,432 1,611 1,790 1,800 2,148 2,685 2,864 3,222 3,580 3,600 4,296 4,475 5,370 6,444 7,160 8,055 8,592 8,950 10,740 12,888 13,425 14,320 16,110 17,900 21,480 25,776 26,850 32,220 35,800 40,275 42,960 53,700 64,440 71,600 80,550 107,400 128,880 161,100 214,800 322,200 and 644,400, with no remainder.

Since 644,400 cannot be divided by just 1 and 644,400, 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).