Q: Is 729,640 a Prime Number?
A: No, 729,640 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 729640 can be evenly divided by 1 2 4 5 8 10 17 20 29 34 37 40 58 68 74 85 116 136 145 148 170 185 232 290 296 340 370 493 580 629 680 740 986 1,073 1,160 1,258 1,480 1,972 2,146 2,465 2,516 3,145 3,944 4,292 4,930 5,032 5,365 6,290 8,584 9,860 10,730 12,580 18,241 19,720 21,460 25,160 36,482 42,920 72,964 91,205 145,928 182,410 364,820 and 729,640, with no remainder.
Since 729,640 cannot be divided by just 1 and 729,640, it is not a prime number.