The number 3,552,640 can be evenly divided by 1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 52 56 61 64 65 70 80 91 104 112 122 128 130 140 160 182 208 224 244 260 280 305 320 364 416 427 448 455 488 520 560 610 640 728 793 832 854 896 910 976 1,040 1,120 1,220 1,456 1,586 1,664 1,708 1,820 1,952 2,080 2,135 2,240 2,440 2,912 3,172 3,416 3,640 3,904 3,965 4,160 4,270 4,480 4,880 5,551 5,824 6,344 6,832 7,280 7,808 7,930 8,320 8,540 9,760 11,102 11,648 12,688 13,664 14,560 15,860 17,080 19,520 22,204 25,376 27,328 27,755 29,120 31,720 34,160 39,040 44,408 50,752 54,656 55,510 58,240 63,440 68,320 88,816 101,504 111,020 126,880 136,640 177,632 222,040 253,760 273,280 355,264 444,080 507,520 710,528 888,160 1,776,320 and 3,552,640, with no remainder.
Since 3,552,640 cannot be divided by just 1 and 3,552,640, it is a composite number.