Q: Is 728 a Prime Number?
A: No, 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 728 can be evenly divided by 1 2 4 7 8 13 14 26 28 52 56 91 104 182 364 and 728, with no remainder.
Since 728 cannot be divided by just 1 and 728, it is not a prime number.