The number 2,247,336 can be evenly divided by 1 2 3 4 6 7 8 9 12 13 14 18 21 24 26 28 36 39 42 49 52 56 63 72 78 84 91 98 104 117 126 147 156 168 182 196 234 252 273 294 312 343 364 392 441 468 504 546 588 637 686 728 819 882 936 1,029 1,092 1,176 1,274 1,372 1,638 1,764 1,911 2,058 2,184 2,401 2,548 2,744 3,087 3,276 3,528 3,822 4,116 4,459 4,802 5,096 5,733 6,174 6,552 7,203 7,644 8,232 8,918 9,604 11,466 12,348 13,377 14,406 15,288 17,836 19,208 21,609 22,932 24,696 26,754 28,812 31,213 35,672 40,131 43,218 45,864 53,508 57,624 62,426 80,262 86,436 93,639 107,016 124,852 160,524 172,872 187,278 249,704 280,917 321,048 374,556 561,834 749,112 1,123,668 and 2,247,336, with no remainder.
Since 2,247,336 cannot be divided by just 1 and 2,247,336, it is a composite number.