Q: Is 1,288,720 a Prime Number?
A: No, 1,288,720 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 1288720 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 89 178 181 356 362 445 712 724 890 905 1,424 1,448 1,780 1,810 2,896 3,560 3,620 7,120 7,240 14,480 16,109 32,218 64,436 80,545 128,872 161,090 257,744 322,180 644,360 and 1,288,720, with no remainder.
Since 1,288,720 cannot be divided by just 1 and 1,288,720, it is not a prime number.