Q: Is 428,628 a Prime Number?
A: No, 428,628 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 428628 can be evenly divided by 1 2 3 4 6 12 23 46 69 92 138 276 1,553 3,106 4,659 6,212 9,318 18,636 35,719 71,438 107,157 142,876 214,314 and 428,628, with no remainder.
Since 428,628 cannot be divided by just 1 and 428,628, it is not a prime number.