The number 907,920 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 36 39 40 45 48 52 60 65 72 78 80 90 97 104 117 120 130 144 156 180 194 195 208 234 240 260 291 312 360 388 390 468 485 520 582 585 624 720 776 780 873 936 970 1,040 1,164 1,170 1,261 1,455 1,552 1,560 1,746 1,872 1,940 2,328 2,340 2,522 2,910 3,120 3,492 3,783 3,880 4,365 4,656 4,680 5,044 5,820 6,305 6,984 7,566 7,760 8,730 9,360 10,088 11,349 11,640 12,610 13,968 15,132 17,460 18,915 20,176 22,698 23,280 25,220 30,264 34,920 37,830 45,396 50,440 56,745 60,528 69,840 75,660 90,792 100,880 113,490 151,320 181,584 226,980 302,640 453,960 and 907,920, with no remainder.
Since 907,920 cannot be divided by just 1 and 907,920, it is a composite number.