A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 229824 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 32 36 38 42 48 54 56 57 63 64 72 76 84 96 108 112 114 126 133 144 152 168 171 189 192 216 224 228 252 266 288 304 336 342 378 399 432 448 456 504 513 532 576 608 672 684 756 798 864 912 1,008 1,026 1,064 1,197 1,216 1,344 1,368 1,512 1,596 1,728 1,824 2,016 2,052 2,128 2,394 2,736 3,024 3,192 3,591 3,648 4,032 4,104 4,256 4,788 5,472 6,048 6,384 7,182 8,208 8,512 9,576 10,944 12,096 12,768 14,364 16,416 19,152 25,536 28,728 32,832 38,304 57,456 76,608 114,912 and 229,824, with no remainder.
Since 229,824 cannot be divided by just 1 and 229,824, it is not a prime number.