Q: Is 215,440 a Prime Number?
A: No, 215,440 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 215440 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 2,693 5,386 10,772 13,465 21,544 26,930 43,088 53,860 107,720 and 215,440, with no remainder.
Since 215,440 cannot be divided by just 1 and 215,440, it is not a prime number.