Q: Is 428,740 a Prime Number?
A: No, 428,740 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 428740 can be evenly divided by 1 2 4 5 10 13 17 20 26 34 52 65 68 85 97 130 170 194 221 260 340 388 442 485 884 970 1,105 1,261 1,649 1,940 2,210 2,522 3,298 4,420 5,044 6,305 6,596 8,245 12,610 16,490 21,437 25,220 32,980 42,874 85,748 107,185 214,370 and 428,740, with no remainder.
Since 428,740 cannot be divided by just 1 and 428,740, it is not a prime number.