A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8012480 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 73 80 98 112 140 146 160 196 224 245 280 292 320 343 365 392 448 490 511 560 584 686 730 784 980 1,022 1,120 1,168 1,372 1,460 1,568 1,715 1,960 2,044 2,240 2,336 2,555 2,744 2,920 3,136 3,430 3,577 3,920 4,088 4,672 5,110 5,488 5,840 6,860 7,154 7,840 8,176 10,220 10,976 11,680 13,720 14,308 15,680 16,352 17,885 20,440 21,952 23,360 25,039 27,440 28,616 32,704 35,770 40,880 50,078 54,880 57,232 71,540 81,760 100,156 109,760 114,464 125,195 143,080 163,520 200,312 228,928 250,390 286,160 400,624 500,780 572,320 801,248 1,001,560 1,144,640 1,602,496 2,003,120 4,006,240 and 8,012,480, with no remainder.
Since 8,012,480 cannot be divided by just 1 and 8,012,480, it is not a prime number.