The number 1,831,200 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 32 35 40 42 48 50 56 60 70 75 80 84 96 100 105 109 112 120 140 150 160 168 175 200 210 218 224 240 280 300 327 336 350 400 420 436 480 525 545 560 600 654 672 700 763 800 840 872 1,050 1,090 1,120 1,200 1,308 1,400 1,526 1,635 1,680 1,744 2,100 2,180 2,289 2,400 2,616 2,725 2,800 3,052 3,270 3,360 3,488 3,815 4,200 4,360 4,578 5,232 5,450 5,600 6,104 6,540 7,630 8,175 8,400 8,720 9,156 10,464 10,900 11,445 12,208 13,080 15,260 16,350 16,800 17,440 18,312 19,075 21,800 22,890 24,416 26,160 30,520 32,700 36,624 38,150 43,600 45,780 52,320 57,225 61,040 65,400 73,248 76,300 87,200 91,560 114,450 122,080 130,800 152,600 183,120 228,900 261,600 305,200 366,240 457,800 610,400 915,600 and 1,831,200, with no remainder.
Since 1,831,200 cannot be divided by just 1 and 1,831,200, it is a composite number.