The number 8,435,340 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 41 45 54 60 81 82 90 108 123 127 135 162 164 180 205 246 254 270 324 369 381 405 410 492 508 540 615 635 738 762 810 820 1,107 1,143 1,230 1,270 1,476 1,524 1,620 1,845 1,905 2,214 2,286 2,460 2,540 3,321 3,429 3,690 3,810 4,428 4,572 5,207 5,535 5,715 6,642 6,858 7,380 7,620 10,287 10,414 11,070 11,430 13,284 13,716 15,621 16,605 17,145 20,574 20,828 22,140 22,860 26,035 31,242 33,210 34,290 41,148 46,863 51,435 52,070 62,484 66,420 68,580 78,105 93,726 102,870 104,140 140,589 156,210 187,452 205,740 234,315 281,178 312,420 421,767 468,630 562,356 702,945 843,534 937,260 1,405,890 1,687,068 2,108,835 2,811,780 4,217,670 and 8,435,340, with no remainder.
Since 8,435,340 cannot be divided by just 1 and 8,435,340, it is a composite number.