Q: Is 388,720 a Prime Number?
A: No, 388,720 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 388720 can be evenly divided by 1 2 4 5 8 10 16 20 40 43 80 86 113 172 215 226 344 430 452 565 688 860 904 1,130 1,720 1,808 2,260 3,440 4,520 4,859 9,040 9,718 19,436 24,295 38,872 48,590 77,744 97,180 194,360 and 388,720, with no remainder.
Since 388,720 cannot be divided by just 1 and 388,720, it is not a prime number.