Q: Is 385,668,720 a Composite Number?

Why is 385,668,720 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 385,668,720 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 43 45 48 60 72 80 86 90 120 129 144 172 180 215 240 258 344 360 387 430 516 645 688 720 774 860 1,032 1,290 1,548 1,720 1,935 2,064 2,580 3,096 3,440 3,870 5,160 6,192 7,740 10,320 12,457 15,480 24,914 30,960 37,371 49,828 62,285 74,742 99,656 112,113 124,570 149,484 186,855 199,312 224,226 249,140 298,968 373,710 448,452 498,280 535,651 560,565 597,936 747,420 896,904 996,560 1,071,302 1,121,130 1,494,840 1,606,953 1,793,808 2,142,604 2,242,260 2,678,255 2,989,680 3,213,906 4,285,208 4,484,520 4,820,859 5,356,510 6,427,812 8,034,765 8,570,416 8,969,040 9,641,718 10,713,020 12,855,624 16,069,530 19,283,436 21,426,040 24,104,295 25,711,248 32,139,060 38,566,872 42,852,080 48,208,590 64,278,120 77,133,744 96,417,180 128,556,240 192,834,360 and 385,668,720, with no remainder.

Since 385,668,720 cannot be divided by just 1 and 385,668,720, 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).