81231332832

Names of 81231332832

• Cardinal: 81231332832 can be written as Eighty-one billion, two hundred thirty-one million, three hundred thirty-two thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 8.1231332832 × 10¹⁰

Factors of 81231332832

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 17591

Divisors of 81231332832

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 17 18 24 26 32 34 36 39 48 51 52 68 72 73 78 96 102 104 117 136 144 146 153 156 204 208 219 221 234 272 288 292 306 312 408 416 438 442 468 544 584 612 624 657 663 816 876 884 936 949 1168 1224 1241 1248 1314 1326 1632 1752 1768 1872 1898 1989 2336 2448 2482 2628 2652 2847 3504 3536 3723 3744 3796 3978 4896 4964 5256 5304 5694 7008 7072 7446 7592 7956 8541 9928 10512 10608 11169 11388 14892 15184 15912 16133 17082 17483 19856 21024 21216 22338 22776 29784 30368 31824 32266 34164 34966 39712 44676 45552 48399 52449 59568 63648 64532 68328 69932 89352 91104 96798 104898 119136 129064 136656 139864 145197 157347 178704 193596 209796 227279 258128 273312 279728 290394 297211 314694 357408 387192 419592 454558 516256 559456 580788 594422 629388 681837 774384 839184 891633 909116 1161576 1188844 1258776 1276259 1363674 1548768 1678368 1783266 1818232 2045511 2323152 2377688 2517552 2552518 2674899 2727348 3566532 3636464 3828777 3863743 4091022 4646304 4755376 5035104 5105036 5349798 5454696 7133064 7272928 7657554 7727486 8182044 9510752 10210072 10699596 10909392 11486331 11591229 14266128 15315108 15454972 16364088 16591367 20420144 21399192 21696403 21818784 22972662 23182458 28532256 30630216 30909944 32728176 33182734 34773687 40840288 42798384 43392806 45945324 46364916 49774101 61260432 61819888 65089209 65456352 66365468 69547374 85596768 86785612 91890648 92729832 99548202 122520864 123639776 130178418 132730936 139094748 149322303 173571224 183781296 185459664 195267627 199096404 260356836 265461872 278189496 282053239 298644606 347142448 367562592 370919328 390535254 398192808 520713672 530923744 556378992 564106478 597289212 694284896 781070508 796385616 846159717 1041427344 1112757984 1128212956 1194578424 1562141016 1592771232 1692319434 2082854688 2256425912 2389156848 2538479151 3124282032 3384638868 4512851824 4778313696 5076958302 6248564064 6769277736 9025703648 10153916604 13538555472 20307833208 27077110944 40615666416 81231332832
• Sum of all divisors σ(n): 267028096608
• Sum of proper divisors (its aliquot sum) s(n): 185796763776
• 81231332832 is an abundant number, because the sum of its proper divisors (185796763776) is greater than itself. Its abundance is 104565430944

Bases of 81231332832

• Binary: 1001011101001110000111100010111100000₂
• Hexadecimal: 0x12E9C3C5E0
• Base-36: 11BF1DK0

Squares and roots of 81231332832

• 81231332832 squared (81231332832²) is 6598529433663161140224
• 81231332832 cubed (81231332832³) is 536007340627640707558784367034368
• The square root of 81231332832 is 285011.1100150309
• The cube root of 81231332832 is 4330.8638042545

Scales and comparisons

• 81,231,332,832 seconds is equal to 2,582 years, 47 weeks, 11 hours, 7 minutes, 12 seconds.
• To count from 1 to 81,231,332,832 would take you about five thousand, one hundred sixty-five 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 81231332832 cubic inches would be around 360.9 feet tall.

Recreational maths with 81231332832

• 81231332832 backwards is 23823313218
• 81231332832 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81231332832's digits is 36
• More coming soon!