Q: Is 6,401,920 a Composite Number?

Why is 6,401,920 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 6,401,920 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 280 320 448 560 640 896 1,120 1,429 2,240 2,858 4,480 5,716 7,145 10,003 11,432 14,290 20,006 22,864 28,580 40,012 45,728 50,015 57,160 80,024 91,456 100,030 114,320 160,048 182,912 200,060 228,640 320,096 400,120 457,280 640,192 800,240 914,560 1,280,384 1,600,480 3,200,960 and 6,401,920, with no remainder.

Since 6,401,920 cannot be divided by just 1 and 6,401,920, 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).