The number 3,489,360 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 31 35 40 42 48 56 60 62 67 70 80 84 93 105 112 120 124 134 140 155 168 186 201 210 217 240 248 268 280 310 335 336 372 402 420 434 465 469 496 536 560 620 651 670 744 804 840 868 930 938 1,005 1,072 1,085 1,240 1,302 1,340 1,407 1,488 1,608 1,680 1,736 1,860 1,876 2,010 2,077 2,170 2,345 2,480 2,604 2,680 2,814 3,216 3,255 3,472 3,720 3,752 4,020 4,154 4,340 4,690 5,208 5,360 5,628 6,231 6,510 7,035 7,440 7,504 8,040 8,308 8,680 9,380 10,385 10,416 11,256 12,462 13,020 14,070 14,539 16,080 16,616 17,360 18,760 20,770 22,512 24,924 26,040 28,140 29,078 31,155 33,232 37,520 41,540 43,617 49,848 52,080 56,280 58,156 62,310 72,695 83,080 87,234 99,696 112,560 116,312 124,620 145,390 166,160 174,468 218,085 232,624 249,240 290,780 348,936 436,170 498,480 581,560 697,872 872,340 1,163,120 1,744,680 and 3,489,360, with no remainder.
Since 3,489,360 cannot be divided by just 1 and 3,489,360, it is a composite number.