Q: Is 378,840 a Composite Number?

Why is 378,840 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 378,840 can be evenly divided by 1 2 3 4 5 6 7 8 10 11 12 14 15 20 21 22 24 28 30 33 35 40 41 42 44 55 56 60 66 70 77 82 84 88 105 110 120 123 132 140 154 164 165 168 205 210 220 231 246 264 280 287 308 328 330 385 410 420 440 451 462 492 574 615 616 660 770 820 840 861 902 924 984 1,148 1,155 1,230 1,320 1,353 1,435 1,540 1,640 1,722 1,804 1,848 2,255 2,296 2,310 2,460 2,706 2,870 3,080 3,157 3,444 3,608 4,305 4,510 4,620 4,920 5,412 5,740 6,314 6,765 6,888 8,610 9,020 9,240 9,471 10,824 11,480 12,628 13,530 15,785 17,220 18,040 18,942 25,256 27,060 31,570 34,440 37,884 47,355 54,120 63,140 75,768 94,710 126,280 189,420 and 378,840, with no remainder.

Since 378,840 cannot be divided by just 1 and 378,840, 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).