The number 3,336,000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 96 100 120 125 139 150 160 192 200 240 250 278 300 320 375 400 417 480 500 556 600 695 750 800 834 960 1,000 1,112 1,200 1,390 1,500 1,600 1,668 2,000 2,085 2,224 2,400 2,780 3,000 3,336 3,475 4,000 4,170 4,448 4,800 5,560 6,000 6,672 6,950 8,000 8,340 8,896 10,425 11,120 12,000 13,344 13,900 16,680 17,375 20,850 22,240 24,000 26,688 27,800 33,360 34,750 41,700 44,480 52,125 55,600 66,720 69,500 83,400 104,250 111,200 133,440 139,000 166,800 208,500 222,400 278,000 333,600 417,000 556,000 667,200 834,000 1,112,000 1,668,000 and 3,336,000, with no remainder.
Since 3,336,000 cannot be divided by just 1 and 3,336,000, it is a composite number.