The number 1,840,800 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 16 20 24 25 26 30 32 39 40 48 50 52 59 60 65 75 78 80 96 100 104 118 120 130 150 156 160 177 195 200 208 236 240 260 295 300 312 325 354 390 400 416 472 480 520 590 600 624 650 708 767 780 800 885 944 975 1,040 1,180 1,200 1,248 1,300 1,416 1,475 1,534 1,560 1,770 1,888 1,950 2,080 2,301 2,360 2,400 2,600 2,832 2,950 3,068 3,120 3,540 3,835 3,900 4,425 4,602 4,720 5,200 5,664 5,900 6,136 6,240 7,080 7,670 7,800 8,850 9,204 9,440 10,400 11,505 11,800 12,272 14,160 15,340 15,600 17,700 18,408 19,175 23,010 23,600 24,544 28,320 30,680 31,200 35,400 36,816 38,350 46,020 47,200 57,525 61,360 70,800 73,632 76,700 92,040 115,050 122,720 141,600 153,400 184,080 230,100 306,800 368,160 460,200 613,600 920,400 and 1,840,800, with no remainder.
Since 1,840,800 cannot be divided by just 1 and 1,840,800, it is a composite number.