Q: Is 385,020 a Composite Number?

Why is 385,020 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 385,020 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 23 27 30 31 36 45 46 54 60 62 69 90 92 93 108 115 124 135 138 155 180 186 207 230 270 276 279 310 345 372 414 460 465 540 558 620 621 690 713 828 837 930 1,035 1,116 1,242 1,380 1,395 1,426 1,674 1,860 2,070 2,139 2,484 2,790 2,852 3,105 3,348 3,565 4,140 4,185 4,278 5,580 6,210 6,417 7,130 8,370 8,556 10,695 12,420 12,834 14,260 16,740 19,251 21,390 25,668 32,085 38,502 42,780 64,170 77,004 96,255 128,340 192,510 and 385,020, with no remainder.

Since 385,020 cannot be divided by just 1 and 385,020, 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).