129387968736

Names of 129387968736

• Cardinal: 129387968736 can be written as One hundred twenty-nine billion, three hundred eighty-seven million, nine hundred sixty-eight thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 1.29387968736 × 10¹¹

Factors of 129387968736

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 486

Divisors of 129387968736

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 32 37 39 48 52 74 78 96 104 111 113 137 148 156 181 208 222 226 274 296 312 339 362 411 416 444 452 481 543 548 592 624 678 724 822 888 904 962 1086 1096 1184 1248 1356 1443 1448 1469 1644 1776 1781 1808 1924 2172 2192 2353 2712 2886 2896 2938 3288 3552 3562 3616 3848 4181 4344 4384 4407 4706 5069 5343 5424 5772 5792 5876 6576 6697 7059 7124 7696 8362 8688 8814 9412 10138 10686 10848 11544 11752 12543 13152 13394 14118 14248 15207 15392 15481 16724 17376 17628 18824 20091 20276 20453 21372 23088 23504 24797 25086 26788 28236 28496 30414 30962 33448 35256 37648 40182 40552 40906 42744 46176 46443 47008 49594 50172 53576 54353 56472 56992 60828 61359 61924 65897 66896 70512 74391 75296 80364 81104 81812 85488 87061 92886 99188 100344 107152 108706 112944 121656 122718 123848 131794 133792 141024 148782 160728 162208 163059 163624 170976 174122 185772 197691 198376 200688 201253 214304 217412 225888 243312 245436 247696 261183 263588 265889 297564 321456 322361 326118 327248 348244 371544 395382 396752 401376 402506 434824 486624 490872 495392 522366 527176 531778 572797 595128 603759 642912 644722 652236 654496 696488 743088 756761 790764 793504 797667 805012 869648 917489 967083 981744 1044732 1054352 1063556 1145594 1190256 1207518 1289444 1304472 1392976 1486176 1513522 1581528 1595334 1610024 1718391 1739296 1834978 1934166 1963488 2089464 2108704 2127112 2270283 2291188 2380512 2415036 2578888 2608944 2752467 2785952 2802061 3027044 3163056 3190668 3220048 3436782 3669956 3868332 4178928 4254224 4540566 4582376 4830072 5157776 5217888 5504934 5604122 6054088 6326112 6381336 6440096 6873564 7339912 7446361 7736664 8357856 8406183 8508448 9081132 9164752 9660144 9837893 10315552 11009868 11208244 11927357 12108176 12762672 13747128 14679824 14892722 15473328 16812366 18162264 18329504 19320288 19675786 22019736 22339083 22416488 23854714 24216352 25525344 27494256 29359648 29513679 29785444 30946656 33624732 35782071 36324528 36426793 39351572 44039472 44678166 44832976 47709428 54988512 59027358 59570888 67249464 71564142 72649056 72853586 78703144 88078944 89356332 89665952 95418856 103676257 109280379 118054716 119141776 134498928 143128284 145707172 157406288 178712664 190837712 207352514 218560758 236109432 238283552 268997856 286256568 291414344 311028771 314812576 357425328 381675424 414705028 437121516 472218864 572513136 582828688 622057542 714850656 829410056 874243032 944437728 1145026272 1165657376 1244115084 1347791341 1658820112 1748486064 2488230168 2695582682 3317640224 3496972128 4043374023 4976460336 5391165364 8086748046 9952920672 10782330728 16173496092 21564661456 32346992184 43129322912 64693984368 129387968736
• Sum of all divisors σ(n): 383855262336
• Sum of proper divisors (its aliquot sum) s(n): 254467293600
• 129387968736 is an abundant number, because the sum of its proper divisors (254467293600) is greater than itself. Its abundance is 125079324864

Bases of 129387968736

• Binary: 1111000100000000111111011100011100000₂
• Hexadecimal: 0x1E201FB8E0
• Base-36: 1NFU97MO

Squares and roots of 129387968736

• 129387968736 squared (129387968736²) is 16741246453628113437696
• 129387968736 cubed (129387968736³) is 2166115872743705215247271531872256
• The square root of 129387968736 is 359705.3915859479
• The cube root of 129387968736 is 5057.8346999947

Scales and comparisons

• 129,387,968,736 seconds is equal to 4,114 years, 7 weeks, 22 hours, 25 minutes, 36 seconds.
• To count from 1 to 129,387,968,736 would take you about eight thousand, two hundred twenty-eight 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 129387968736 cubic inches would be around 421.5 feet tall.

Recreational maths with 129387968736

• 129387968736 backwards is 637869783921
• The number of decimal digits it has is: 12
• The sum of 129387968736's digits is 69
• More coming soon!