Q: Is 1,388,128 a Prime Number?
A: No, 1,388,128 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 1388128 can be evenly divided by 1 2 4 7 8 14 16 28 32 56 112 224 6,197 12,394 24,788 43,379 49,576 86,758 99,152 173,516 198,304 347,032 694,064 and 1,388,128, with no remainder.
Since 1,388,128 cannot be divided by just 1 and 1,388,128, it is not a prime number.