A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8828352 can be evenly divided by 1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 81 96 104 108 117 131 144 156 162 192 208 216 234 262 288 312 324 351 393 416 432 468 524 576 624 648 702 786 832 864 936 1,048 1,053 1,179 1,248 1,296 1,404 1,572 1,703 1,728 1,872 2,096 2,106 2,358 2,496 2,592 2,808 3,144 3,406 3,537 3,744 4,192 4,212 4,716 5,109 5,184 5,616 6,288 6,812 7,074 7,488 8,384 8,424 9,432 10,218 10,611 11,232 12,576 13,624 14,148 15,327 16,848 18,864 20,436 21,222 22,464 25,152 27,248 28,296 30,654 33,696 37,728 40,872 42,444 45,981 54,496 56,592 61,308 67,392 75,456 81,744 84,888 91,962 108,992 113,184 122,616 137,943 163,488 169,776 183,924 226,368 245,232 275,886 326,976 339,552 367,848 490,464 551,772 679,104 735,696 980,928 1,103,544 1,471,392 2,207,088 2,942,784 4,414,176 and 8,828,352, with no remainder.
Since 8,828,352 cannot be divided by just 1 and 8,828,352, it is not a prime number.