The number 2,916,000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 72 75 80 81 90 96 100 108 120 125 135 144 150 160 162 180 200 216 225 240 243 250 270 288 300 324 360 375 400 405 432 450 480 486 500 540 600 648 675 720 729 750 800 810 864 900 972 1,000 1,080 1,125 1,200 1,215 1,296 1,350 1,440 1,458 1,500 1,620 1,800 1,944 2,000 2,025 2,160 2,250 2,400 2,430 2,592 2,700 2,916 3,000 3,240 3,375 3,600 3,645 3,888 4,000 4,050 4,320 4,500 4,860 5,400 5,832 6,000 6,075 6,480 6,750 7,200 7,290 7,776 8,100 9,000 9,720 10,125 10,800 11,664 12,000 12,150 12,960 13,500 14,580 16,200 18,000 18,225 19,440 20,250 21,600 23,328 24,300 27,000 29,160 30,375 32,400 36,000 36,450 38,880 40,500 48,600 54,000 58,320 60,750 64,800 72,900 81,000 91,125 97,200 108,000 116,640 121,500 145,800 162,000 182,250 194,400 243,000 291,600 324,000 364,500 486,000 583,200 729,000 972,000 1,458,000 and 2,916,000, with no remainder.
Since 2,916,000 cannot be divided by just 1 and 2,916,000, it is a composite number.