Q: Is 823,840 a Prime Number?
A: No, 823,840 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 823840 can be evenly divided by 1 2 4 5 8 10 16 19 20 32 38 40 76 80 95 152 160 190 271 304 380 542 608 760 1,084 1,355 1,520 2,168 2,710 3,040 4,336 5,149 5,420 8,672 10,298 10,840 20,596 21,680 25,745 41,192 43,360 51,490 82,384 102,980 164,768 205,960 411,920 and 823,840, with no remainder.
Since 823,840 cannot be divided by just 1 and 823,840, it is not a prime number.