The number 3,502,620 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 15 18 20 22 29 30 33 36 44 45 55 58 60 61 66 87 90 99 110 116 122 132 145 165 174 180 183 198 220 244 261 290 305 319 330 348 366 396 435 495 522 549 580 610 638 660 671 732 870 915 957 990 1,044 1,098 1,220 1,276 1,305 1,342 1,595 1,740 1,769 1,830 1,914 1,980 2,013 2,196 2,610 2,684 2,745 2,871 3,190 3,355 3,538 3,660 3,828 4,026 4,785 5,220 5,307 5,490 5,742 6,039 6,380 6,710 7,076 8,052 8,845 9,570 10,065 10,614 10,980 11,484 12,078 13,420 14,355 15,921 17,690 19,140 19,459 20,130 21,228 24,156 26,535 28,710 30,195 31,842 35,380 38,918 40,260 53,070 57,420 58,377 60,390 63,684 77,836 79,605 97,295 106,140 116,754 120,780 159,210 175,131 194,590 233,508 291,885 318,420 350,262 389,180 583,770 700,524 875,655 1,167,540 1,751,310 and 3,502,620, with no remainder.
Since 3,502,620 cannot be divided by just 1 and 3,502,620, it is a composite number.