The number 4,088,280 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 31 35 40 42 56 60 62 70 84 93 105 120 124 140 155 157 168 186 210 217 248 280 310 314 372 420 434 465 471 620 628 651 744 785 840 868 930 942 1,085 1,099 1,240 1,256 1,302 1,570 1,736 1,860 1,884 2,170 2,198 2,355 2,604 3,140 3,255 3,297 3,720 3,768 4,340 4,396 4,710 4,867 5,208 5,495 6,280 6,510 6,594 8,680 8,792 9,420 9,734 10,990 13,020 13,188 14,601 16,485 18,840 19,468 21,980 24,335 26,040 26,376 29,202 32,970 34,069 38,936 43,960 48,670 58,404 65,940 68,138 73,005 97,340 102,207 116,808 131,880 136,276 146,010 170,345 194,680 204,414 272,552 292,020 340,690 408,828 511,035 584,040 681,380 817,656 1,022,070 1,362,760 2,044,140 and 4,088,280, with no remainder.
Since 4,088,280 cannot be divided by just 1 and 4,088,280, it is a composite number.