A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4872000 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 29 30 32 35 40 42 48 50 56 58 60 64 70 75 80 84 87 96 100 105 112 116 120 125 140 145 150 160 168 174 175 192 200 203 210 224 232 240 250 280 290 300 320 336 348 350 375 400 406 420 435 448 464 480 500 525 560 580 600 609 672 696 700 725 750 800 812 840 870 875 928 960 1,000 1,015 1,050 1,120 1,160 1,200 1,218 1,344 1,392 1,400 1,450 1,500 1,600 1,624 1,680 1,740 1,750 1,856 2,000 2,030 2,100 2,175 2,240 2,320 2,400 2,436 2,625 2,784 2,800 2,900 3,000 3,045 3,248 3,360 3,480 3,500 3,625 4,000 4,060 4,200 4,350 4,640 4,800 4,872 5,075 5,250 5,568 5,600 5,800 6,000 6,090 6,496 6,720 6,960 7,000 7,250 8,000 8,120 8,400 8,700 9,280 9,744 10,150 10,500 10,875 11,200 11,600 12,000 12,180 12,992 13,920 14,000 14,500 15,225 16,240 16,800 17,400 19,488 20,300 21,000 21,750 23,200 24,000 24,360 25,375 27,840 28,000 29,000 30,450 32,480 33,600 34,800 38,976 40,600 42,000 43,500 46,400 48,720 50,750 56,000 58,000 60,900 64,960 69,600 76,125 81,200 84,000 87,000 97,440 101,500 116,000 121,800 139,200 152,250 162,400 168,000 174,000 194,880 203,000 232,000 243,600 304,500 324,800 348,000 406,000 487,200 609,000 696,000 812,000 974,400 1,218,000 1,624,000 2,436,000 and 4,872,000, with no remainder.
Since 4,872,000 cannot be divided by just 1 and 4,872,000, it is not a prime number.