The number 4,344,480 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 70 72 80 84 90 96 105 112 120 126 140 144 160 168 180 210 224 240 252 280 288 315 336 360 420 431 480 504 560 630 672 720 840 862 1,008 1,120 1,260 1,293 1,440 1,680 1,724 2,016 2,155 2,520 2,586 3,017 3,360 3,448 3,879 4,310 5,040 5,172 6,034 6,465 6,896 7,758 8,620 9,051 10,080 10,344 12,068 12,930 13,792 15,085 15,516 17,240 18,102 19,395 20,688 24,136 25,860 27,153 30,170 31,032 34,480 36,204 38,790 41,376 45,255 48,272 51,720 54,306 60,340 62,064 68,960 72,408 77,580 90,510 96,544 103,440 108,612 120,680 124,128 135,765 144,816 155,160 181,020 206,880 217,224 241,360 271,530 289,632 310,320 362,040 434,448 482,720 543,060 620,640 724,080 868,896 1,086,120 1,448,160 2,172,240 and 4,344,480, with no remainder.
Since 4,344,480 cannot be divided by just 1 and 4,344,480, it is a composite number.