The number 1,022,580 can be evenly divided by 1 2 3 4 5 6 9 10 12 13 15 18 19 20 23 26 30 36 38 39 45 46 52 57 60 65 69 76 78 90 92 95 114 115 117 130 138 156 171 180 190 195 207 228 230 234 247 260 276 285 299 342 345 380 390 414 437 460 468 494 570 585 598 684 690 741 780 828 855 874 897 988 1,035 1,140 1,170 1,196 1,235 1,311 1,380 1,482 1,495 1,710 1,748 1,794 2,070 2,185 2,223 2,340 2,470 2,622 2,691 2,964 2,990 3,420 3,588 3,705 3,933 4,140 4,370 4,446 4,485 4,940 5,244 5,382 5,681 5,980 6,555 7,410 7,866 8,740 8,892 8,970 10,764 11,115 11,362 13,110 13,455 14,820 15,732 17,043 17,940 19,665 22,230 22,724 26,220 26,910 28,405 34,086 39,330 44,460 51,129 53,820 56,810 68,172 78,660 85,215 102,258 113,620 170,430 204,516 255,645 340,860 511,290 and 1,022,580, with no remainder.
Since 1,022,580 cannot be divided by just 1 and 1,022,580, it is a composite number.