The number 2,504,320 can be evenly divided by 1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 43 52 56 64 65 70 80 86 91 104 112 128 130 140 160 172 182 208 215 224 260 280 301 320 344 364 416 430 448 455 520 559 560 602 640 688 728 832 860 896 910 1,040 1,118 1,120 1,204 1,376 1,456 1,505 1,664 1,720 1,820 2,080 2,236 2,240 2,408 2,752 2,795 2,912 3,010 3,440 3,640 3,913 4,160 4,472 4,480 4,816 5,504 5,590 5,824 6,020 6,880 7,280 7,826 8,320 8,944 9,632 11,180 11,648 12,040 13,760 14,560 15,652 17,888 19,264 19,565 22,360 24,080 27,520 29,120 31,304 35,776 38,528 39,130 44,720 48,160 58,240 62,608 71,552 78,260 89,440 96,320 125,216 156,520 178,880 192,640 250,432 313,040 357,760 500,864 626,080 1,252,160 and 2,504,320, with no remainder.
Since 2,504,320 cannot be divided by just 1 and 2,504,320, it is a composite number.