The number 2,589,300 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 25 27 28 30 35 36 42 45 50 54 60 63 70 75 84 90 100 105 108 126 135 137 140 150 175 180 189 210 225 252 270 274 300 315 350 378 411 420 450 525 540 548 630 675 685 700 756 822 900 945 959 1,050 1,233 1,260 1,350 1,370 1,575 1,644 1,890 1,918 2,055 2,100 2,466 2,700 2,740 2,877 3,150 3,425 3,699 3,780 3,836 4,110 4,725 4,795 4,932 5,754 6,165 6,300 6,850 7,398 8,220 8,631 9,450 9,590 10,275 11,508 12,330 13,700 14,385 14,796 17,262 18,495 18,900 19,180 20,550 23,975 24,660 25,893 28,770 30,825 34,524 36,990 41,100 43,155 47,950 51,786 57,540 61,650 71,925 73,980 86,310 92,475 95,900 103,572 123,300 129,465 143,850 172,620 184,950 215,775 258,930 287,700 369,900 431,550 517,860 647,325 863,100 1,294,650 and 2,589,300, with no remainder.
Since 2,589,300 cannot be divided by just 1 and 2,589,300, it is a composite number.