Q: Is 428,440 a Prime Number?
A: No, 428,440 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 428440 can be evenly divided by 1 2 4 5 8 10 20 40 10,711 21,422 42,844 53,555 85,688 107,110 214,220 and 428,440, with no remainder.
Since 428,440 cannot be divided by just 1 and 428,440, it is not a prime number.