The number 6,287,424 can be evenly divided by 1 2 3 4 6 8 11 12 13 16 22 24 26 32 33 39 44 48 52 64 66 78 88 96 104 132 143 156 176 192 208 229 264 286 312 352 416 429 458 528 572 624 687 704 832 858 916 1,056 1,144 1,248 1,374 1,716 1,832 2,112 2,288 2,496 2,519 2,748 2,977 3,432 3,664 4,576 5,038 5,496 5,954 6,864 7,328 7,557 8,931 9,152 10,076 10,992 11,908 13,728 14,656 15,114 17,862 20,152 21,984 23,816 27,456 30,228 32,747 35,724 40,304 43,968 47,632 60,456 65,494 71,448 80,608 95,264 98,241 120,912 130,988 142,896 161,216 190,528 196,482 241,824 261,976 285,792 392,964 483,648 523,952 571,584 785,928 1,047,904 1,571,856 2,095,808 3,143,712 and 6,287,424, with no remainder.
Since 6,287,424 cannot be divided by just 1 and 6,287,424, it is a composite number.