A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2727480 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 17 20 21 24 28 30 34 35 40 42 51 56 60 68 70 84 85 102 105 119 120 136 140 168 170 191 204 210 238 255 280 340 357 382 408 420 476 510 573 595 680 714 764 840 952 955 1,020 1,146 1,190 1,337 1,428 1,528 1,785 1,910 2,040 2,292 2,380 2,674 2,856 2,865 3,247 3,570 3,820 4,011 4,584 4,760 5,348 5,730 6,494 6,685 7,140 7,640 8,022 9,741 10,696 11,460 12,988 13,370 14,280 16,044 16,235 19,482 20,055 22,729 22,920 25,976 26,740 32,088 32,470 38,964 40,110 45,458 48,705 53,480 64,940 68,187 77,928 80,220 90,916 97,410 113,645 129,880 136,374 160,440 181,832 194,820 227,290 272,748 340,935 389,640 454,580 545,496 681,870 909,160 1,363,740 and 2,727,480, with no remainder.
Since 2,727,480 cannot be divided by just 1 and 2,727,480, it is not a prime number.