The number 7,222,320 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 35 36 40 42 45 48 56 60 63 70 72 80 84 90 105 112 120 126 140 144 168 180 210 240 252 280 315 336 360 420 504 560 630 720 840 1,008 1,260 1,433 1,680 2,520 2,866 4,299 5,040 5,732 7,165 8,598 10,031 11,464 12,897 14,330 17,196 20,062 21,495 22,928 25,794 28,660 30,093 34,392 40,124 42,990 50,155 51,588 57,320 60,186 64,485 68,784 80,248 85,980 90,279 100,310 103,176 114,640 120,372 128,970 150,465 160,496 171,960 180,558 200,620 206,352 240,744 257,940 300,930 343,920 361,116 401,240 451,395 481,488 515,880 601,860 722,232 802,480 902,790 1,031,760 1,203,720 1,444,464 1,805,580 2,407,440 3,611,160 and 7,222,320, with no remainder.
Since 7,222,320 cannot be divided by just 1 and 7,222,320, it is a composite number.