Q: Is 728,240 a Prime Number?
A: No, 728,240 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 728240 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 9,103 18,206 36,412 45,515 72,824 91,030 145,648 182,060 364,120 and 728,240, with no remainder.
Since 728,240 cannot be divided by just 1 and 728,240, it is not a prime number.