The number 3,524,400 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 25 30 33 36 40 44 45 48 50 55 60 66 72 75 80 88 89 90 99 100 110 120 132 144 150 165 176 178 180 198 200 220 225 240 264 267 275 300 330 356 360 396 400 440 445 450 495 528 534 550 600 660 712 720 792 801 825 880 890 900 979 990 1,068 1,100 1,200 1,320 1,335 1,424 1,584 1,602 1,650 1,780 1,800 1,958 1,980 2,136 2,200 2,225 2,475 2,640 2,670 2,937 3,204 3,300 3,560 3,600 3,916 3,960 4,005 4,272 4,400 4,450 4,895 4,950 5,340 5,874 6,408 6,600 6,675 7,120 7,832 7,920 8,010 8,811 8,900 9,790 9,900 10,680 11,748 12,816 13,200 13,350 14,685 15,664 16,020 17,622 17,800 19,580 19,800 20,025 21,360 23,496 24,475 26,700 29,370 32,040 35,244 35,600 39,160 39,600 40,050 44,055 46,992 48,950 53,400 58,740 64,080 70,488 73,425 78,320 80,100 88,110 97,900 106,800 117,480 140,976 146,850 160,200 176,220 195,800 220,275 234,960 293,700 320,400 352,440 391,600 440,550 587,400 704,880 881,100 1,174,800 1,762,200 and 3,524,400, with no remainder.
Since 3,524,400 cannot be divided by just 1 and 3,524,400, it is a composite number.