Q: Is 387,840 a Prime Number?
A: No, 387,840 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 387840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 101 120 128 160 192 202 240 256 303 320 384 404 480 505 606 640 768 808 960 1,010 1,212 1,280 1,515 1,616 1,920 2,020 2,424 3,030 3,232 3,840 4,040 4,848 6,060 6,464 8,080 9,696 12,120 12,928 16,160 19,392 24,240 25,856 32,320 38,784 48,480 64,640 77,568 96,960 129,280 193,920 and 387,840, with no remainder.
Since 387,840 cannot be divided by just 1 and 387,840, it is not a prime number.