The number 3,083,520 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 73 80 88 96 110 120 128 132 146 160 165 176 192 219 220 240 256 264 292 320 330 352 365 384 438 440 480 528 584 640 660 704 730 768 803 876 880 960 1,056 1,095 1,168 1,280 1,320 1,408 1,460 1,606 1,752 1,760 1,920 2,112 2,190 2,336 2,409 2,640 2,816 2,920 3,212 3,504 3,520 3,840 4,015 4,224 4,380 4,672 4,818 5,280 5,840 6,424 7,008 7,040 8,030 8,448 8,760 9,344 9,636 10,560 11,680 12,045 12,848 14,016 14,080 16,060 17,520 18,688 19,272 21,120 23,360 24,090 25,696 28,032 32,120 35,040 38,544 42,240 46,720 48,180 51,392 56,064 64,240 70,080 77,088 93,440 96,360 102,784 128,480 140,160 154,176 192,720 205,568 256,960 280,320 308,352 385,440 513,920 616,704 770,880 1,027,840 1,541,760 and 3,083,520, with no remainder.
Since 3,083,520 cannot be divided by just 1 and 3,083,520, it is a composite number.