Q: Is 387,216 a Prime Number?
A: No, 387,216 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 387216 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 2,689 5,378 8,067 10,756 16,134 21,512 24,201 32,268 43,024 48,402 64,536 96,804 129,072 193,608 and 387,216, with no remainder.
Since 387,216 cannot be divided by just 1 and 387,216, it is not a prime number.