The number 6,023,304 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 17 18 19 21 24 28 34 36 37 38 42 51 56 57 63 68 72 74 76 84 102 111 114 119 126 133 136 148 152 153 168 171 204 222 228 238 252 259 266 296 306 323 333 342 357 399 408 444 456 476 504 518 532 612 629 646 666 684 703 714 777 798 888 952 969 1,036 1,064 1,071 1,197 1,224 1,258 1,292 1,332 1,368 1,406 1,428 1,554 1,596 1,887 1,938 2,072 2,109 2,142 2,261 2,331 2,394 2,516 2,584 2,664 2,812 2,856 2,907 3,108 3,192 3,774 3,876 4,218 4,284 4,403 4,522 4,662 4,788 4,921 5,032 5,624 5,661 5,814 6,216 6,327 6,783 7,548 7,752 8,436 8,568 8,806 9,044 9,324 9,576 9,842 11,322 11,628 11,951 12,654 13,209 13,566 14,763 15,096 16,872 17,612 18,088 18,648 19,684 20,349 22,644 23,256 23,902 25,308 26,418 27,132 29,526 35,224 35,853 39,368 39,627 40,698 44,289 45,288 47,804 50,616 52,836 54,264 59,052 71,706 79,254 81,396 83,657 88,578 95,608 105,672 107,559 118,104 143,412 158,508 162,792 167,314 177,156 215,118 250,971 286,824 317,016 334,628 354,312 430,236 501,942 669,256 752,913 860,472 1,003,884 1,505,826 2,007,768 3,011,652 and 6,023,304, with no remainder.
Since 6,023,304 cannot be divided by just 1 and 6,023,304, it is a composite number.