12820985856

Names of 12820985856

• Cardinal: 12820985856 can be written as Twelve billion, eight hundred twenty million, nine hundred eighty-five thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 1.2820985856 × 10¹⁰

Factors of 12820985856

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 254

Divisors of 12820985856

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 61 63 64 72 81 84 96 108 112 122 126 128 144 162 168 181 183 189 192 216 224 244 252 256 288 324 336 362 366 378 384 427 432 448 488 504 512 543 549 567 576 648 672 724 732 756 768 854 864 896 976 1008 1024 1086 1098 1134 1152 1267 1281 1296 1344 1448 1464 1512 1536 1629 1647 1708 1728 1792 1952 2016 2048 2172 2196 2268 2304 2534 2562 2592 2688 2896 2928 3024 3072 3258 3294 3416 3456 3584 3801 3843 3904 4032 4344 4392 4536 4608 4887 4941 5068 5124 5184 5376 5792 5856 6048 6144 6516 6588 6832 6912 7168 7602 7686 7808 8064 8688 8784 9072 9216 9774 9882 10136 10248 10368 10752 11041 11403 11529 11584 11712 12096 13032 13176 13664 13824 14336 14661 15204 15372 15616 16128 17376 17568 18144 18432 19548 19764 20272 20496 20736 21504 22082 22806 23058 23168 23424 24192 26064 26352 27328 27648 29322 30408 30744 31232 32256 33123 34209 34587 34752 35136 36288 39096 39528 40544 40992 41472 43008 44164 45612 46116 46336 46848 48384 52128 52704 54656 55296 58644 60816 61488 62464 64512 66246 68418 69174 69504 70272 72576 77287 78192 79056 81088 81984 82944 88328 91224 92232 92672 93696 96768 99369 102627 104256 105408 109312 117288 121632 122976 124928 129024 132492 136836 138348 139008 140544 145152 154574 156384 158112 162176 163968 165888 176656 182448 184464 185344 187392 193536 198738 205254 208512 210816 218624 231861 234576 243264 245952 264984 273672 276696 278016 281088 290304 298107 309148 312768 316224 324352 327936 353312 364896 368928 370688 374784 387072 397476 410508 417024 421632 437248 463722 469152 486528 491904 529968 547344 553392 556032 562176 580608 596214 618296 625536 632448 648704 655872 695583 706624 729792 737856 794952 821016 834048 843264 874496 894321 927444 938304 973056 983808 1059936 1094688 1106784 1112064 1124352 1161216 1192428 1236592 1251072 1264896 1297408 1311744 1391166 1413248 1459584 1475712 1589904 1642032 1668096 1686528 1788642 1854888 1876608 1946112 1967616 2086749 2119872 2189376 2213568 2384856 2473184 2502144 2529792 2594816 2623488 2782332 2826496 2919168 2951424 3179808 3284064 3336192 3373056 3577284 3709776 3753216 3892224 3935232 4173498 4239744 4378752 4427136 4769712 4946368 5004288 5059584 5564664 5652992 5838336 5902848 6260247 6359616 6568128 7154568 7419552 7506432 7784448 7870464 8346996 8479488 8757504 8854272 9539424 9892736 10008576 10119168 11129328 11305984 11676672 11805696 12520494 12719232 13136256 14309136 14839104 15012864 16693992 16958976 17515008 17708544 19078848 19785472 22258656 22611968 23353344 23611392 25040988 25438464 26272512 28618272 29678208 30025728 33387984 33917952 35030016 35417088 38157696 39570944 44517312 50081976 50876928 52545024 57236544 59356416 66775968 67835904 70060032 70834176 76315392 79141888 89034624 100163952 101753856 105090048 114473088 118712832 133551936 152630784 158283776 178069248 200327904 203507712 210180096 228946176 237425664 267103872 305261568 356138496 400655808 457892352 474851328 534207744 610523136 712276992 801311616 915784704 1068415488 1424553984 1602623232 1831569408 2136830976 3205246464 4273661952 6410492928 12820985856
• Sum of all divisors σ(n): 44729324640
• Sum of proper divisors (its aliquot sum) s(n): 31908338784
• 12820985856 is an abundant number, because the sum of its proper divisors (31908338784) is greater than itself. Its abundance is 19087352928

Bases of 12820985856

• Binary: 1011111100001100001011100000000000₂
• Hexadecimal: 0x2FC30B800
• Base-36: 5W1A800

Squares and roots of 12820985856

• 12820985856 squared (12820985856²) is 164377678319752052736
• 12820985856 cubed (12820985856³) is 2107483888779658913555222102016
• The square root of 12820985856 is 113229.7922633437
• The cube root of 12820985856 is 2340.4918887037

Scales and comparisons

• 12,820,985,856 seconds is equal to 407 years, 34 weeks, 5 days, 57 minutes, 36 seconds.
• To count from 1 to 12,820,985,856 would take you about eight hundred fifteen years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 12820985856 cubic inches would be around 195 feet tall.

Recreational maths with 12820985856

• 12820985856 backwards is 65858902821
• 12820985856 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12820985856's digits is 54
• More coming soon!