The number 1,328,250 can be evenly divided by 1 2 3 5 6 7 10 11 14 15 21 22 23 25 30 33 35 42 46 50 55 66 69 70 75 77 105 110 115 125 138 150 154 161 165 175 210 230 231 250 253 275 322 330 345 350 375 385 462 483 506 525 550 575 690 750 759 770 805 825 875 966 1,050 1,150 1,155 1,265 1,375 1,518 1,610 1,650 1,725 1,750 1,771 1,925 2,310 2,415 2,530 2,625 2,750 2,875 3,450 3,542 3,795 3,850 4,025 4,125 4,830 5,250 5,313 5,750 5,775 6,325 7,590 8,050 8,250 8,625 8,855 9,625 10,626 11,550 12,075 12,650 17,250 17,710 18,975 19,250 20,125 24,150 26,565 28,875 31,625 37,950 40,250 44,275 53,130 57,750 60,375 63,250 88,550 94,875 120,750 132,825 189,750 221,375 265,650 442,750 664,125 and 1,328,250, with no remainder.
Since 1,328,250 cannot be divided by just 1 and 1,328,250, it is a composite number.