The number 1,493,280 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 30 32 34 36 40 45 48 51 60 61 68 72 80 85 90 96 102 120 122 136 144 153 160 170 180 183 204 240 244 255 272 288 305 306 340 360 366 408 480 488 510 544 549 610 612 680 720 732 765 816 915 976 1,020 1,037 1,098 1,220 1,224 1,360 1,440 1,464 1,530 1,632 1,830 1,952 2,040 2,074 2,196 2,440 2,448 2,720 2,745 2,928 3,060 3,111 3,660 4,080 4,148 4,392 4,880 4,896 5,185 5,490 5,856 6,120 6,222 7,320 8,160 8,296 8,784 9,333 9,760 10,370 10,980 12,240 12,444 14,640 15,555 16,592 17,568 18,666 20,740 21,960 24,480 24,888 29,280 31,110 33,184 37,332 41,480 43,920 46,665 49,776 62,220 74,664 82,960 87,840 93,330 99,552 124,440 149,328 165,920 186,660 248,880 298,656 373,320 497,760 746,640 and 1,493,280, with no remainder.
Since 1,493,280 cannot be divided by just 1 and 1,493,280, it is a composite number.