The number 3,389,568 can be evenly divided by 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 42 48 52 56 64 78 84 91 96 97 104 112 128 156 168 182 192 194 208 224 273 291 312 336 364 384 388 416 448 546 582 624 672 679 728 776 832 896 1,092 1,164 1,248 1,261 1,344 1,358 1,456 1,552 1,664 2,037 2,184 2,328 2,496 2,522 2,688 2,716 2,912 3,104 3,783 4,074 4,368 4,656 4,992 5,044 5,432 5,824 6,208 7,566 8,148 8,736 8,827 9,312 10,088 10,864 11,648 12,416 15,132 16,296 17,472 17,654 18,624 20,176 21,728 26,481 30,264 32,592 34,944 35,308 37,248 40,352 43,456 52,962 60,528 65,184 70,616 80,704 86,912 105,924 121,056 130,368 141,232 161,408 211,848 242,112 260,736 282,464 423,696 484,224 564,928 847,392 1,129,856 1,694,784 and 3,389,568, with no remainder.
Since 3,389,568 cannot be divided by just 1 and 3,389,568, it is a composite number.