128139938472

Names of 128139938472

• Cardinal: 128139938472 can be written as One hundred twenty-eight billion, one hundred thirty-nine million, nine hundred thirty-eight thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.28139938472 × 10¹¹

Factors of 128139938472

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 8264

Divisors of 128139938472

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 19 21 24 26 28 29 38 39 42 52 56 57 58 76 78 84 87 91 104 114 116 133 152 156 168 169 174 182 203 228 232 247 266 273 312 338 348 364 377 399 406 456 494 507 532 546 551 609 676 696 728 741 754 798 812 988 1014 1064 1092 1102 1131 1183 1218 1352 1482 1508 1596 1624 1653 1729 1976 2028 2184 2204 2262 2366 2436 2639 2964 3016 3192 3211 3306 3458 3549 3857 4056 4408 4524 4732 4872 4901 5187 5278 5928 6422 6612 6916 7098 7163 7714 7917 8191 9048 9464 9633 9802 10374 10556 11571 12844 13224 13832 14196 14326 14703 15428 15834 16382 19266 19604 20748 21112 21489 22477 23142 24573 25688 28392 28652 29406 30856 31668 32764 34307 38532 39208 41496 42978 44954 46284 49146 50141 57304 57337 58812 63336 65528 67431 68614 77064 85956 89908 92568 93119 98292 100282 102921 106483 114674 117624 134862 137228 150423 155629 171912 172011 179816 186238 196584 200564 205842 212966 229348 237539 269724 274456 279357 300846 311258 319449 344022 372476 401128 411684 425932 458696 466887 475078 539448 558714 601692 622516 638898 651833 688044 712617 744952 745381 823368 851864 933774 950156 1089403 1117428 1203384 1245032 1277796 1303666 1376088 1384279 1425234 1490762 1662773 1867548 1900312 1955499 2023177 2178806 2234856 2236143 2555592 2607332 2768558 2850468 2981524 3088007 3268209 3325546 3735096 3910998 4046354 4152837 4357612 4472286 4513241 4988319 5214664 5537116 5700936 5963048 6069531 6176014 6536418 6651092 7821996 8092708 8305674 8715224 8944572 9026482 9264021 9689953 9976638 11074232 12139062 12352028 13072836 13302184 13539723 14162239 15643992 16185416 16611348 17889144 18052964 18528042 19379906 19953276 21616049 24278124 24704056 26145672 26301301 27079446 28324478 29069859 31592687 33222696 36105928 37056084 38759812 39906552 40144091 42486717 43232098 48556248 52602602 54158892 56648956 58139718 58672133 63185374 64848147 74112168 77519624 78903903 80288182 84973434 86464196 94778061 105205204 108317784 113297912 116279436 117344266 120432273 126370748 129696294 157807806 160576364 169946868 172928392 176016399 184109107 189556122 210410408 232558872 234688532 240864546 252741496 259392588 281008637 315615612 321152728 339893736 352032798 368218214 379112244 410704931 469377064 481729092 518785176 552327321 562017274 631231224 704065596 736436428 758224488 762737729 821409862 843025911 963458184 1104654642 1124034548 1232114793 1408131192 1472872856 1525475458 1642819724 1686051822 2209309284 2248069096 2288213187 2464229586 3050950916 3285639448 3372103644 4418618568 4576426374 4928459172 5339164103 6101901832 6744207288 9152852748 9856918344 10678328206 16017492309 18305705496 21356656412 32034984618 42713312824 64069969236 128139938472
• Sum of all divisors σ(n): 431751168000
• Sum of proper divisors (its aliquot sum) s(n): 303611229528
• 128139938472 is an abundant number, because the sum of its proper divisors (303611229528) is greater than itself. Its abundance is 175471291056

Bases of 128139938472

• Binary: 1110111010101101111000100101010101000₂
• Hexadecimal: 0x1DD5BC4AA8
• Base-36: 1MV77LBC

Squares and roots of 128139938472

• 128139938472 squared (128139938472²) is 16419843831607945694784
• 128139938472 cubed (128139938472³) is 2104037778302090890155939051330048
• The square root of 128139938472 is 357966.3929365437
• The cube root of 128139938472 is 5041.5201080545

Scales and comparisons

• 128,139,938,472 seconds is equal to 4,074 years, 23 weeks, 4 days, 3 hours, 21 minutes, 12 seconds.
• To count from 1 to 128,139,938,472 would take you about eight thousand, one hundred forty-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 128139938472 cubic inches would be around 420.1 feet tall.

Recreational maths with 128139938472

• 128139938472 backwards is 274839931821
• 128139938472 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128139938472's digits is 57
• More coming soon!