Q: Is 1,428,804 a Prime Number?
A: No, 1,428,804 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 1428804 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 36 39 43 52 71 78 86 117 129 142 156 172 213 234 258 284 387 426 468 516 559 639 774 852 923 1,118 1,278 1,548 1,677 1,846 2,236 2,556 2,769 3,053 3,354 3,692 5,031 5,538 6,106 6,708 8,307 9,159 10,062 11,076 12,212 16,614 18,318 20,124 27,477 33,228 36,636 39,689 54,954 79,378 109,908 119,067 158,756 238,134 357,201 476,268 714,402 and 1,428,804, with no remainder.
Since 1,428,804 cannot be divided by just 1 and 1,428,804, it is not a prime number.