Q: Is 858,728 a Prime Number?
A: No, 858,728 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 858728 can be evenly divided by 1 2 4 8 13 23 26 46 52 92 104 184 299 359 598 718 1,196 1,436 2,392 2,872 4,667 8,257 9,334 16,514 18,668 33,028 37,336 66,056 107,341 214,682 429,364 and 858,728, with no remainder.
Since 858,728 cannot be divided by just 1 and 858,728, it is not a prime number.