Q: Is 538,720 a Prime Number?
A: No, 538,720 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 538720 can be evenly divided by 1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 37 40 52 56 65 70 74 80 91 104 112 130 140 148 160 182 185 208 224 259 260 280 296 364 370 416 455 481 518 520 560 592 728 740 910 962 1,036 1,040 1,120 1,184 1,295 1,456 1,480 1,820 1,924 2,072 2,080 2,405 2,590 2,912 2,960 3,367 3,640 3,848 4,144 4,810 5,180 5,920 6,734 7,280 7,696 8,288 9,620 10,360 13,468 14,560 15,392 16,835 19,240 20,720 26,936 33,670 38,480 41,440 53,872 67,340 76,960 107,744 134,680 269,360 and 538,720, with no remainder.
Since 538,720 cannot be divided by just 1 and 538,720, it is not a prime number.