Q: Is 1,388,828 a Prime Number?
A: No, 1,388,828 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 1388828 can be evenly divided by 1 2 4 7 14 28 193 257 386 514 772 1,028 1,351 1,799 2,702 3,598 5,404 7,196 49,601 99,202 198,404 347,207 694,414 and 1,388,828, with no remainder.
Since 1,388,828 cannot be divided by just 1 and 1,388,828, it is not a prime number.