The number 4,284,720 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 33 36 40 44 45 48 55 60 66 72 80 88 90 99 110 120 132 144 165 176 180 198 220 240 264 330 360 396 440 495 528 541 660 720 792 880 990 1,082 1,320 1,584 1,623 1,980 2,164 2,640 2,705 3,246 3,960 4,328 4,869 5,410 5,951 6,492 7,920 8,115 8,656 9,738 10,820 11,902 12,984 16,230 17,853 19,476 21,640 23,804 24,345 25,968 29,755 32,460 35,706 38,952 43,280 47,608 48,690 53,559 59,510 64,920 71,412 77,904 89,265 95,216 97,380 107,118 119,020 129,840 142,824 178,530 194,760 214,236 238,040 267,795 285,648 357,060 389,520 428,472 476,080 535,590 714,120 856,944 1,071,180 1,428,240 2,142,360 and 4,284,720, with no remainder.
Since 4,284,720 cannot be divided by just 1 and 4,284,720, it is a composite number.