81828389916

Names of 81828389916

• Cardinal: 81828389916 can be written as Eighty-one billion, eight hundred twenty-eight million, three hundred eighty-nine thousand, nine hundred sixteen.

Scientific notation

• Scientific notation: 8.1828389916 × 10¹⁰

Factors of 81828389916

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 166

Divisors of 81828389916

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 19 21 26 27 28 36 38 39 42 43 52 54 57 63 76 78 79 81 84 86 91 108 114 117 126 129 133 156 158 162 171 172 182 189 228 234 237 247 252 258 266 273 301 316 324 342 351 364 378 387 399 468 474 494 513 516 532 546 553 559 567 602 684 702 711 741 756 774 798 817 819 903 948 988 1026 1027 1053 1092 1106 1118 1134 1161 1197 1204 1404 1422 1482 1501 1539 1548 1596 1634 1638 1659 1677 1729 1806 1849 2052 2054 2106 2133 2212 2223 2236 2268 2322 2394 2451 2457 2709 2844 2964 3002 3078 3081 3268 3276 3318 3354 3397 3458 3483 3591 3612 3698 3913 4108 4212 4266 4446 4503 4644 4788 4902 4914 4977 5031 5187 5418 5547 5719 6004 6156 6162 6399 6636 6669 6708 6794 6916 6966 7182 7189 7353 7371 7396 7826 8127 8532 8892 9006 9243 9804 9828 9954 10062 10191 10374 10507 10621 10773 10836 11094 11438 11739 12324 12798 12943 13338 13509 13588 13932 14364 14378 14706 14742 14931 15093 15561 15652 16254 16641 17157 18012 18486 19513 19908 20007 20124 20382 20748 21014 21242 21546 21567 22059 22188 22876 23478 23779 24037 24381 25596 25886 26676 27018 27729 28756 29412 29484 29862 30186 30573 31122 31521 31863 32508 33282 34314 35131 35217 36972 38829 39026 40014 40527 40764 42028 42484 43092 43134 44118 44161 44793 45279 46683 46956 47558 48074 48762 49923 51471 51772 54036 55458 58539 59724 60372 61146 62244 63042 63726 64543 64701 66177 66564 68628 70262 70434 71337 72111 74347 77658 78052 80028 81054 83187 86268 88236 88322 89586 90558 91719 93366 94563 95116 95589 96148 97524 99846 102942 105393 105651 110916 116487 117078 121581 122292 126084 127452 129086 129402 132354 132483 136591 140049 140524 140868 142674 144222 146071 148694 149769 154413 155316 162108 166374 168259 175617 176644 179172 181116 183438 186732 189126 191178 193629 194103 199692 205884 210786 211302 214011 216333 223041 232974 234156 243162 245917 258172 258804 264708 264966 273182 275157 280098 283689 285348 286767 288444 292142 297388 299538 308826 309127 316179 316953 332748 336518 349461 351234 366876 378252 382356 387258 388206 397449 409773 421572 422604 428022 432666 438213 446082 451801 456703 463239 465948 486324 491834 504777 526851 529932 546364 550314 560196 567378 573534 580887 582309 584284 599076 617652 618254 632358 633906 642033 648999 669123 673036 698922 702468 737751 774516 776412 794898 819546 839059 851067 856044 860301 865332 876426 892164 903602 913406 926478 927381 948537 983668 1009554 1022497 1048383 1053702 1100628 1134756 1147068 1161774 1164618 1192347 1229319 1236508 1264716 1267812 1284066 1297998 1314639 1338246 1355403 1370109 1397844 1475502 1514331 1580553 1589796 1639092 1678118 1702134 1720602 1742661 1752852 1807204 1826812 1852956 1854762 1897074 1898923 1926099 1946997 2007369 2019108 2044994 2096766 2107404 2213253 2323548 2329236 2384694 2458638 2517177 2568132 2595996 2629278 2676492 2710806 2740218 2775349 2782143 2845611 2951004 3028662 3067491 3161106 3196921 3356236 3404268 3441204 3485322 3577041 3687957 3709524 3794148 3797846 3852198 3893994 3943917 4014738 4066209 4089988 4110327 4193532 4426506 4542993 4769388 4917276 5034354 5227983 5258556 5421612 5480436 5550698 5564286 5691222 5696769 5873413 6022107 6057324 6134982 6322212 6393842 6639759 6970644 7154082 7375914 7551531 7595692 7704396 7787988 7887834 8029476 8132418 8220654 8326047 8346429 8853012 9085986 9202473 9590763 10068708 10455966 11063871 11101396 11128572 11382444 11393538 11746826 11831751 12044214 12198627 12269964 12330981 12787684 13279518 13292461 13628979 14308164 14751828 15103062 15775668 16264836 16441308 16652094 16692858 17090307 17620239 18171972 18404946 19181526 19427443 19919277 20911932 22127742 22654593 22787076 23493652 23663502 24088428 24397254 24661962 24978141 25039287 26559036 26584922 27257958 27607419 28772289 30206124 33304188 33385716 34180614 35240478 36079537 36595881 36809892 36992943 38363052 38854886 39838554 39877383 44255484 45309186 47327004 48794508 49323924 49956282 50078574 51270921 52860717 53169844 54515916 55214838 57544578 58282329 67963779 68361228 70480956 72159074 73191762 73985886 74934423 77709772 79677108 79754766 82822257 86316867 90618372 99912564 100157148 102541842 105721434 108238611 110429676 115089156 116564658 119632149 135927558 144318148 146383524 147971772 149868846 153812763 158582151 159509532 165644514 172633734 174846987 205083684 211442868 216477222 224803269 233129316 239264298 252556759 258950601 271855116 299737692 307625526 317164302 324715833 331289028 345267468 349693974 358896447 432954444 449606538 475746453 478528596 505113518 517901202 524540961 615251052 634328604 649431666 699387948 717792894 757670277 899213076 951492906 974147499 1010227036 1035802404 1049081922 1076689341 1298863332 1435585788 1515340554 1573622883 1902985812 1948294998 2098163844 2153378682 2273010831 2922442497 3030681108 3147245766 3896589996 4306757364 4546021662 5844884994 6294491532 6819032493 9092043324 11689769988 13638064986 20457097479 27276129972 40914194958 81828389916
• Sum of all divisors σ(n): 287324083200
• Sum of proper divisors (its aliquot sum) s(n): 205495693284
• 81828389916 is an abundant number, because the sum of its proper divisors (205495693284) is greater than itself. Its abundance is 123667303368

Bases of 81828389916

• Binary: 1001100001101010110100010010000011100₂
• Hexadecimal: 0x130D5A241C
• Base-36: 11LAIDR0

Squares and roots of 81828389916

• 81828389916 squared (81828389916²) is 6695885396244930487056
• 81828389916 cubed (81828389916³) is 547913521036780334133134158927296
• The square root of 81828389916 is 286056.6201226605
• The cube root of 81828389916 is 4341.4486502395

Scales and comparisons

• 81,828,389,916 seconds is equal to 2,601 years, 46 weeks, 1 day, 20 hours, 18 minutes, 36 seconds.
• To count from 1 to 81,828,389,916 would take you about five thousand, two hundred three 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 81828389916 cubic inches would be around 361.8 feet tall.

Recreational maths with 81828389916

• 81828389916 backwards is 61998382818
• 81828389916 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81828389916's digits is 63
• More coming soon!