Q: Is 624,428 a Prime Number?
A: No, 624,428 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 624428 can be evenly divided by 1 2 4 7 14 28 29 58 116 203 406 769 812 1,538 3,076 5,383 10,766 21,532 22,301 44,602 89,204 156,107 312,214 and 624,428, with no remainder.
Since 624,428 cannot be divided by just 1 and 624,428, it is not a prime number.