Q: Is 2,431,640 a Composite Number?

Why is 2,431,640 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 2,431,640 can be evenly divided by 1 2 4 5 8 10 20 31 37 40 53 62 74 106 124 148 155 185 212 248 265 296 310 370 424 530 620 740 1,060 1,147 1,240 1,480 1,643 1,961 2,120 2,294 3,286 3,922 4,588 5,735 6,572 7,844 8,215 9,176 9,805 11,470 13,144 15,688 16,430 19,610 22,940 32,860 39,220 45,880 60,791 65,720 78,440 121,582 243,164 303,955 486,328 607,910 1,215,820 and 2,431,640, with no remainder.

Since 2,431,640 cannot be divided by just 1 and 2,431,640, 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).