A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 737352 can be evenly divided by 1 2 3 4 6 7 8 9 11 12 14 18 19 21 22 24 28 33 36 38 42 44 49 56 57 63 66 72 76 77 84 88 98 99 114 126 132 133 147 152 154 168 171 196 198 209 228 231 252 264 266 294 308 342 392 396 399 418 441 456 462 504 532 539 588 616 627 684 693 792 798 836 882 924 931 1,064 1,078 1,176 1,197 1,254 1,368 1,386 1,463 1,596 1,617 1,672 1,764 1,848 1,862 1,881 2,156 2,394 2,508 2,772 2,793 2,926 3,192 3,234 3,528 3,724 3,762 4,312 4,389 4,788 4,851 5,016 5,544 5,586 5,852 6,468 7,448 7,524 8,379 8,778 9,576 9,702 10,241 11,172 11,704 12,936 13,167 15,048 16,758 17,556 19,404 20,482 22,344 26,334 30,723 33,516 35,112 38,808 40,964 52,668 61,446 67,032 81,928 92,169 105,336 122,892 184,338 245,784 368,676 and 737,352, with no remainder.
Since 737,352 cannot be divided by just 1 and 737,352, it is not a prime number.