Q: Is 3,221,680 a Composite Number?

Why is 3,221,680 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 3,221,680 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 70 77 80 88 110 112 140 154 176 220 280 308 385 440 523 560 616 770 880 1,046 1,232 1,540 2,092 2,615 3,080 3,661 4,184 5,230 5,753 6,160 7,322 8,368 10,460 11,506 14,644 18,305 20,920 23,012 28,765 29,288 36,610 40,271 41,840 46,024 57,530 58,576 73,220 80,542 92,048 115,060 146,440 161,084 201,355 230,120 292,880 322,168 402,710 460,240 644,336 805,420 1,610,840 and 3,221,680, with no remainder.

Since 3,221,680 cannot be divided by just 1 and 3,221,680, 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).