Q: Is 2,405,840 a Composite Number?

Why is 2,405,840 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 2,405,840 can be evenly divided by 1 2 4 5 8 10 16 17 20 29 34 40 58 61 68 80 85 116 122 136 145 170 232 244 272 290 305 340 464 488 493 580 610 680 976 986 1,037 1,160 1,220 1,360 1,769 1,972 2,074 2,320 2,440 2,465 3,538 3,944 4,148 4,880 4,930 5,185 7,076 7,888 8,296 8,845 9,860 10,370 14,152 16,592 17,690 19,720 20,740 28,304 30,073 35,380 39,440 41,480 60,146 70,760 82,960 120,292 141,520 150,365 240,584 300,730 481,168 601,460 1,202,920 and 2,405,840, with no remainder.

Since 2,405,840 cannot be divided by just 1 and 2,405,840, 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).