Q: Is 478,428 a Prime Number?
A: No, 478,428 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 478428 can be evenly divided by 1 2 3 4 6 12 39,869 79,738 119,607 159,476 239,214 and 478,428, with no remainder.
Since 478,428 cannot be divided by just 1 and 478,428, it is not a prime number.