A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2024400 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 35 40 42 48 50 56 60 70 75 80 84 100 105 112 120 140 150 168 175 200 210 240 241 280 300 336 350 400 420 482 525 560 600 700 723 840 964 1,050 1,200 1,205 1,400 1,446 1,680 1,687 1,928 2,100 2,410 2,800 2,892 3,374 3,615 3,856 4,200 4,820 5,061 5,784 6,025 6,748 7,230 8,400 8,435 9,640 10,122 11,568 12,050 13,496 14,460 16,870 18,075 19,280 20,244 24,100 25,305 26,992 28,920 33,740 36,150 40,488 42,175 48,200 50,610 57,840 67,480 72,300 80,976 84,350 96,400 101,220 126,525 134,960 144,600 168,700 202,440 253,050 289,200 337,400 404,880 506,100 674,800 1,012,200 and 2,024,400, with no remainder.
Since 2,024,400 cannot be divided by just 1 and 2,024,400, it is not a prime number.