The number 1,359,288 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 29 31 36 42 54 56 58 62 63 72 84 87 93 108 116 124 126 168 174 186 189 203 216 217 232 248 252 261 279 348 372 378 406 434 504 522 558 609 651 696 744 756 783 812 837 868 899 1,044 1,116 1,218 1,302 1,512 1,566 1,624 1,674 1,736 1,798 1,827 1,953 2,088 2,232 2,436 2,604 2,697 3,132 3,348 3,596 3,654 3,906 4,872 5,208 5,394 5,481 5,859 6,264 6,293 6,696 7,192 7,308 7,812 8,091 10,788 10,962 11,718 12,586 14,616 15,624 16,182 18,879 21,576 21,924 23,436 24,273 25,172 32,364 37,758 43,848 46,872 48,546 50,344 56,637 64,728 75,516 97,092 113,274 151,032 169,911 194,184 226,548 339,822 453,096 679,644 and 1,359,288, with no remainder.
Since 1,359,288 cannot be divided by just 1 and 1,359,288, it is a composite number.