Q: Is 1,742,720 a Composite Number?

Why is 1,742,720 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 1,742,720 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 280 320 389 448 560 640 778 896 1,120 1,556 1,945 2,240 2,723 3,112 3,890 4,480 5,446 6,224 7,780 10,892 12,448 13,615 15,560 21,784 24,896 27,230 31,120 43,568 49,792 54,460 62,240 87,136 108,920 124,480 174,272 217,840 248,960 348,544 435,680 871,360 and 1,742,720, with no remainder.

Since 1,742,720 cannot be divided by just 1 and 1,742,720, 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).