The number 7,214,256 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 34 36 42 48 51 56 63 68 72 84 102 112 119 126 136 144 153 168 204 238 252 272 306 336 357 408 421 476 504 612 714 816 842 952 1,008 1,071 1,224 1,263 1,428 1,684 1,904 2,142 2,448 2,526 2,856 2,947 3,368 3,789 4,284 5,052 5,712 5,894 6,736 7,157 7,578 8,568 8,841 10,104 11,788 14,314 15,156 17,136 17,682 20,208 21,471 23,576 26,523 28,628 30,312 35,364 42,942 47,152 50,099 53,046 57,256 60,624 64,413 70,728 85,884 100,198 106,092 114,512 128,826 141,456 150,297 171,768 200,396 212,184 257,652 300,594 343,536 400,792 424,368 450,891 515,304 601,188 801,584 901,782 1,030,608 1,202,376 1,803,564 2,404,752 3,607,128 and 7,214,256, with no remainder.
Since 7,214,256 cannot be divided by just 1 and 7,214,256, it is a composite number.