The number 2,021,976 can be evenly divided by 1 2 3 4 6 8 9 11 12 18 22 23 24 27 33 36 37 44 46 54 66 69 72 74 88 92 99 108 111 132 138 148 184 198 207 216 222 253 264 276 296 297 333 396 407 414 444 506 552 594 621 666 759 792 814 828 851 888 999 1,012 1,188 1,221 1,242 1,332 1,518 1,628 1,656 1,702 1,998 2,024 2,277 2,376 2,442 2,484 2,553 2,664 3,036 3,256 3,404 3,663 3,996 4,554 4,884 4,968 5,106 6,072 6,808 6,831 7,326 7,659 7,992 9,108 9,361 9,768 10,212 10,989 13,662 14,652 15,318 18,216 18,722 20,424 21,978 22,977 27,324 28,083 29,304 30,636 37,444 43,956 45,954 54,648 56,166 61,272 74,888 84,249 87,912 91,908 112,332 168,498 183,816 224,664 252,747 336,996 505,494 673,992 1,010,988 and 2,021,976, with no remainder.
Since 2,021,976 cannot be divided by just 1 and 2,021,976, it is a composite number.