Q: Is 422,728 a Prime Number?
A: No, 422,728 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 422728 can be evenly divided by 1 2 4 8 53 106 212 424 997 1,994 3,988 7,976 52,841 105,682 211,364 and 422,728, with no remainder.
Since 422,728 cannot be divided by just 1 and 422,728, it is not a prime number.