Q: Is 728,540 a Prime Number?
A: No, 728,540 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 728540 can be evenly divided by 1 2 4 5 10 20 73 146 292 365 499 730 998 1,460 1,996 2,495 4,990 9,980 36,427 72,854 145,708 182,135 364,270 and 728,540, with no remainder.
Since 728,540 cannot be divided by just 1 and 728,540, it is not a prime number.