The number 1,843,632 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 31 36 42 48 56 59 62 63 72 84 93 112 118 124 126 144 168 177 186 217 236 248 252 279 336 354 372 413 434 472 496 504 531 558 651 708 744 826 868 944 1,008 1,062 1,116 1,239 1,302 1,416 1,488 1,652 1,736 1,829 1,953 2,124 2,232 2,478 2,604 2,832 3,304 3,472 3,658 3,717 3,906 4,248 4,464 4,956 5,208 5,487 6,608 7,316 7,434 7,812 8,496 9,912 10,416 10,974 12,803 14,632 14,868 15,624 16,461 19,824 21,948 25,606 29,264 29,736 31,248 32,922 38,409 43,896 51,212 59,472 65,844 76,818 87,792 102,424 115,227 131,688 153,636 204,848 230,454 263,376 307,272 460,908 614,544 921,816 and 1,843,632, with no remainder.
Since 1,843,632 cannot be divided by just 1 and 1,843,632, it is a composite number.