Q: Is 1,620,810 a Composite Number?

Why is 1,620,810 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 1,620,810 can be evenly divided by 1 2 3 5 6 9 10 15 18 23 27 29 30 45 46 54 58 69 81 87 90 115 135 138 145 162 174 207 230 243 261 270 290 345 405 414 435 486 522 621 667 690 783 810 870 1,035 1,215 1,242 1,305 1,334 1,566 1,863 2,001 2,070 2,349 2,430 2,610 3,105 3,335 3,726 3,915 4,002 4,698 5,589 6,003 6,210 6,670 7,047 7,830 9,315 10,005 11,178 11,745 12,006 14,094 18,009 18,630 20,010 23,490 27,945 30,015 35,235 36,018 54,027 55,890 60,030 70,470 90,045 108,054 162,081 180,090 270,135 324,162 540,270 810,405 and 1,620,810, with no remainder.

Since 1,620,810 cannot be divided by just 1 and 1,620,810, 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).