Q: Is 386,820 a Prime Number?
A: No, 386,820 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 386820 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 307 315 420 614 630 921 1,228 1,260 1,535 1,842 2,149 2,763 3,070 3,684 4,298 4,605 5,526 6,140 6,447 8,596 9,210 10,745 11,052 12,894 13,815 18,420 19,341 21,490 25,788 27,630 32,235 38,682 42,980 55,260 64,470 77,364 96,705 128,940 193,410 and 386,820, with no remainder.
Since 386,820 cannot be divided by just 1 and 386,820, it is not a prime number.