A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2893320 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 27 30 36 38 40 45 47 54 57 60 72 76 81 90 94 95 108 114 120 135 141 152 162 171 180 188 190 216 228 235 270 282 285 324 342 360 376 380 405 423 456 470 513 540 564 570 648 684 705 760 810 846 855 893 940 1,026 1,080 1,128 1,140 1,269 1,368 1,410 1,539 1,620 1,692 1,710 1,786 1,880 2,052 2,115 2,280 2,538 2,565 2,679 2,820 3,078 3,240 3,384 3,420 3,572 3,807 4,104 4,230 4,465 5,076 5,130 5,358 5,640 6,156 6,345 6,840 7,144 7,614 7,695 8,037 8,460 8,930 10,152 10,260 10,716 12,312 12,690 13,395 15,228 15,390 16,074 16,920 17,860 19,035 20,520 21,432 24,111 25,380 26,790 30,456 30,780 32,148 35,720 38,070 40,185 48,222 50,760 53,580 61,560 64,296 72,333 76,140 80,370 96,444 107,160 120,555 144,666 152,280 160,740 192,888 241,110 289,332 321,480 361,665 482,220 578,664 723,330 964,440 1,446,660 and 2,893,320, with no remainder.
Since 2,893,320 cannot be divided by just 1 and 2,893,320, it is not a prime number.