The number 3,723,456 can be evenly divided by 1 2 3 4 6 8 11 12 16 22 24 32 33 41 43 44 48 64 66 82 86 88 96 123 129 132 164 172 176 192 246 258 264 328 344 352 451 473 492 516 528 656 688 704 902 946 984 1,032 1,056 1,312 1,353 1,376 1,419 1,763 1,804 1,892 1,968 2,064 2,112 2,624 2,706 2,752 2,838 3,526 3,608 3,784 3,936 4,128 5,289 5,412 5,676 7,052 7,216 7,568 7,872 8,256 10,578 10,824 11,352 14,104 14,432 15,136 19,393 21,156 21,648 22,704 28,208 28,864 30,272 38,786 42,312 43,296 45,408 56,416 58,179 77,572 84,624 86,592 90,816 112,832 116,358 155,144 169,248 232,716 310,288 338,496 465,432 620,576 930,864 1,241,152 1,861,728 and 3,723,456, with no remainder.
Since 3,723,456 cannot be divided by just 1 and 3,723,456, it is a composite number.