Q: Is 1,720,428 a Prime Number?
A: No, 1,720,428 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 1720428 can be evenly divided by 1 2 3 4 6 12 307 467 614 921 934 1,228 1,401 1,842 1,868 2,802 3,684 5,604 143,369 286,738 430,107 573,476 860,214 and 1,720,428, with no remainder.
Since 1,720,428 cannot be divided by just 1 and 1,720,428, it is not a prime number.