Q: Is 387,828 a Prime Number?
A: No, 387,828 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 387828 can be evenly divided by 1 2 3 4 6 7 9 12 14 18 19 21 27 28 36 38 42 54 57 63 76 81 84 108 114 126 133 162 171 189 228 243 252 266 324 342 378 399 486 513 532 567 684 729 756 798 972 1,026 1,134 1,197 1,458 1,539 1,596 1,701 2,052 2,268 2,394 2,916 3,078 3,402 3,591 4,617 4,788 5,103 6,156 6,804 7,182 9,234 10,206 10,773 13,851 14,364 18,468 20,412 21,546 27,702 32,319 43,092 55,404 64,638 96,957 129,276 193,914 and 387,828, with no remainder.
Since 387,828 cannot be divided by just 1 and 387,828, it is not a prime number.