The number 9,578,400 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 16 20 24 25 26 30 32 39 40 48 50 52 60 65 75 78 80 96 100 104 120 130 150 156 160 195 200 208 240 260 300 307 312 325 390 400 416 480 520 600 614 624 650 780 800 921 975 1,040 1,200 1,228 1,248 1,300 1,535 1,560 1,842 1,950 2,080 2,400 2,456 2,600 3,070 3,120 3,684 3,900 3,991 4,605 4,912 5,200 6,140 6,240 7,368 7,675 7,800 7,982 9,210 9,824 10,400 11,973 12,280 14,736 15,350 15,600 15,964 18,420 19,955 23,025 23,946 24,560 29,472 30,700 31,200 31,928 36,840 39,910 46,050 47,892 49,120 59,865 61,400 63,856 73,680 79,820 92,100 95,784 99,775 119,730 122,800 127,712 147,360 159,640 184,200 191,568 199,550 239,460 245,600 299,325 319,280 368,400 383,136 399,100 478,920 598,650 638,560 736,800 798,200 957,840 1,197,300 1,596,400 1,915,680 2,394,600 3,192,800 4,789,200 and 9,578,400, with no remainder.
Since 9,578,400 cannot be divided by just 1 and 9,578,400, it is a composite number.