Q: Is 438,128 a Prime Number?
A: No, 438,128 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 438128 can be evenly divided by 1 2 4 8 16 139 197 278 394 556 788 1,112 1,576 2,224 3,152 27,383 54,766 109,532 219,064 and 438,128, with no remainder.
Since 438,128 cannot be divided by just 1 and 438,128, it is not a prime number.