Q: Is 6,637,428 a Prime Number?
A: No, 6,637,428 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 6637428 can be evenly divided by 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 26,339 52,678 79,017 105,356 158,034 184,373 237,051 316,068 368,746 474,102 553,119 737,492 948,204 1,106,238 1,659,357 2,212,476 3,318,714 and 6,637,428, with no remainder.
Since 6,637,428 cannot be divided by just 1 and 6,637,428, it is not a prime number.