Q: Is 1,229,728 a Prime Number?
A: No, 1,229,728 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 1229728 can be evenly divided by 1 2 4 8 16 32 83 166 332 463 664 926 1,328 1,852 2,656 3,704 7,408 14,816 38,429 76,858 153,716 307,432 614,864 and 1,229,728, with no remainder.
Since 1,229,728 cannot be divided by just 1 and 1,229,728, it is not a prime number.