Q: Is 1,378,890 a Prime Number?
A: No, 1,378,890 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 1378890 can be evenly divided by 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 5,107 10,214 15,321 25,535 30,642 45,963 51,070 76,605 91,926 137,889 153,210 229,815 275,778 459,630 689,445 and 1,378,890, with no remainder.
Since 1,378,890 cannot be divided by just 1 and 1,378,890, it is not a prime number.