The number 3,840,300 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 17 18 20 25 30 34 36 45 50 51 60 68 75 85 90 100 102 150 153 170 180 204 225 251 255 300 306 340 425 450 502 510 612 753 765 850 900 1,004 1,020 1,255 1,275 1,506 1,530 1,700 2,259 2,510 2,550 3,012 3,060 3,765 3,825 4,267 4,518 5,020 5,100 6,275 7,530 7,650 8,534 9,036 11,295 12,550 12,801 15,060 15,300 17,068 18,825 21,335 22,590 25,100 25,602 37,650 38,403 42,670 45,180 51,204 56,475 64,005 75,300 76,806 85,340 106,675 112,950 128,010 153,612 192,015 213,350 225,900 256,020 320,025 384,030 426,700 640,050 768,060 960,075 1,280,100 1,920,150 and 3,840,300, with no remainder.
Since 3,840,300 cannot be divided by just 1 and 3,840,300, it is a composite number.