The number 2,822,400 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 28 30 32 35 36 40 42 45 48 49 50 56 60 63 64 70 72 75 80 84 90 96 98 100 105 112 120 126 128 140 144 147 150 160 168 175 180 192 196 200 210 224 225 240 245 252 256 280 288 294 300 315 320 336 350 360 384 392 400 420 441 448 450 480 490 504 525 560 576 588 600 630 640 672 700 720 735 768 784 800 840 882 896 900 960 980 1,008 1,050 1,120 1,152 1,176 1,200 1,225 1,260 1,280 1,344 1,400 1,440 1,470 1,568 1,575 1,600 1,680 1,764 1,792 1,800 1,920 1,960 2,016 2,100 2,205 2,240 2,304 2,352 2,400 2,450 2,520 2,688 2,800 2,880 2,940 3,136 3,150 3,200 3,360 3,528 3,600 3,675 3,840 3,920 4,032 4,200 4,410 4,480 4,704 4,800 4,900 5,040 5,376 5,600 5,760 5,880 6,272 6,300 6,400 6,720 7,056 7,200 7,350 7,840 8,064 8,400 8,820 8,960 9,408 9,600 9,800 10,080 11,025 11,200 11,520 11,760 12,544 12,600 13,440 14,112 14,400 14,700 15,680 16,128 16,800 17,640 18,816 19,200 19,600 20,160 22,050 22,400 23,520 25,200 26,880 28,224 28,800 29,400 31,360 33,600 35,280 37,632 39,200 40,320 44,100 44,800 47,040 50,400 56,448 57,600 58,800 62,720 67,200 70,560 78,400 80,640 88,200 94,080 100,800 112,896 117,600 134,400 141,120 156,800 176,400 188,160 201,600 235,200 282,240 313,600 352,800 403,200 470,400 564,480 705,600 940,800 1,411,200 and 2,822,400, with no remainder.
Since 2,822,400 cannot be divided by just 1 and 2,822,400, it is a composite number.