The number 3,351,744 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 23 24 32 33 36 44 46 48 64 66 69 72 88 92 96 99 132 138 144 176 184 192 198 207 253 264 276 288 352 368 396 414 506 528 529 552 576 704 736 759 792 828 1,012 1,056 1,058 1,104 1,472 1,518 1,584 1,587 1,656 2,024 2,112 2,116 2,208 2,277 3,036 3,168 3,174 3,312 4,048 4,232 4,416 4,554 4,761 5,819 6,072 6,336 6,348 6,624 8,096 8,464 9,108 9,522 11,638 12,144 12,696 13,248 16,192 16,928 17,457 18,216 19,044 23,276 24,288 25,392 33,856 34,914 36,432 38,088 46,552 48,576 50,784 52,371 69,828 72,864 76,176 93,104 101,568 104,742 139,656 145,728 152,352 186,208 209,484 279,312 304,704 372,416 418,968 558,624 837,936 1,117,248 1,675,872 and 3,351,744, with no remainder.
Since 3,351,744 cannot be divided by just 1 and 3,351,744, it is a composite number.