The number 3,226,440 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 23 24 28 30 35 40 42 46 56 60 69 70 84 92 105 115 120 138 140 161 167 168 184 210 230 276 280 322 334 345 420 460 483 501 552 644 668 690 805 835 840 920 966 1,002 1,169 1,288 1,336 1,380 1,610 1,670 1,932 2,004 2,338 2,415 2,505 2,760 3,220 3,340 3,507 3,841 3,864 4,008 4,676 4,830 5,010 5,845 6,440 6,680 7,014 7,682 9,352 9,660 10,020 11,523 11,690 14,028 15,364 17,535 19,205 19,320 20,040 23,046 23,380 26,887 28,056 30,728 35,070 38,410 46,092 46,760 53,774 57,615 70,140 76,820 80,661 92,184 107,548 115,230 134,435 140,280 153,640 161,322 215,096 230,460 268,870 322,644 403,305 460,920 537,740 645,288 806,610 1,075,480 1,613,220 and 3,226,440, with no remainder.
Since 3,226,440 cannot be divided by just 1 and 3,226,440, it is a composite number.