A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2327040 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 101 120 128 144 160 180 192 202 240 256 288 303 320 360 384 404 480 505 512 576 606 640 720 768 808 909 960 1,010 1,152 1,212 1,280 1,440 1,515 1,536 1,616 1,818 1,920 2,020 2,304 2,424 2,560 2,880 3,030 3,232 3,636 3,840 4,040 4,545 4,608 4,848 5,760 6,060 6,464 7,272 7,680 8,080 9,090 9,696 11,520 12,120 12,928 14,544 16,160 18,180 19,392 23,040 24,240 25,856 29,088 32,320 36,360 38,784 48,480 51,712 58,176 64,640 72,720 77,568 96,960 116,352 129,280 145,440 155,136 193,920 232,704 258,560 290,880 387,840 465,408 581,760 775,680 1,163,520 and 2,327,040, with no remainder.
Since 2,327,040 cannot be divided by just 1 and 2,327,040, it is not a prime number.