Q: Is 428,320 a Prime Number?
A: No, 428,320 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 428320 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 2,677 5,354 10,708 13,385 21,416 26,770 42,832 53,540 85,664 107,080 214,160 and 428,320, with no remainder.
Since 428,320 cannot be divided by just 1 and 428,320, it is not a prime number.