138972729420

Names of 138972729420

• Cardinal: 138972729420 can be written as One hundred thirty-eight billion, nine hundred seventy-two million, seven hundred twenty-nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.3897272942 × 10¹¹

Factors of 138972729420

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1269

Divisors of 138972729420

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 28 30 35 36 38 42 43 45 57 60 63 70 76 84 86 90 95 105 114 126 127 129 133 140 171 172 180 190 210 215 228 252 254 258 266 285 301 315 342 380 381 387 399 420 430 508 516 532 570 602 630 635 645 665 684 762 774 798 817 855 860 889 903 1063 1140 1143 1197 1204 1260 1270 1290 1330 1505 1524 1548 1596 1634 1710 1778 1806 1905 1935 1995 2126 2286 2394 2413 2451 2540 2580 2660 2667 2709 3010 3189 3268 3420 3556 3612 3810 3870 3990 4085 4252 4445 4515 4572 4788 4826 4902 5315 5334 5418 5461 5715 5719 5985 6020 6378 7239 7353 7441 7620 7740 7980 8001 8170 8890 9030 9567 9652 9804 10630 10668 10836 10922 11430 11438 11970 12065 12255 12756 13335 13545 14478 14706 14882 15945 16002 16340 16383 16891 17157 17780 18060 19134 20197 21260 21717 21844 22323 22860 22876 23940 24130 24510 26670 27090 27305 28595 28956 29412 29764 31890 32004 32766 33782 34314 36195 36765 37205 38227 38268 40005 40394 43434 44646 45709 47835 48260 49020 49149 50673 51471 53340 54180 54610 57190 60591 63780 65532 66969 67564 68628 72390 73530 74410 76454 80010 80788 81915 84455 85785 86868 89292 91418 95670 98298 100985 101346 102942 103759 108585 109220 111615 114380 114681 121182 133938 135001 137127 141379 144780 147060 148820 152019 152908 160020 163830 168910 171570 181773 182836 191135 191340 196596 201970 202692 205884 207518 217170 223230 228545 229362 242364 245745 253365 257355 267876 270002 274254 282758 302955 304038 311277 319963 327660 334845 337820 343140 344043 363546 382270 403940 405003 411381 415036 424137 434340 446460 457090 458724 491490 506730 514710 518795 540004 548508 565516 573405 605910 608076 622554 639926 669690 675005 685635 688086 706895 726313 727092 760095 764540 810006 822762 848274 868471 908865 914180 933831 945007 959889 982980 1013460 1029420 1037590 1146810 1211820 1215009 1245108 1272411 1279852 1339380 1350010 1371270 1376172 1413790 1452626 1520190 1556385 1599815 1620012 1645524 1696548 1720215 1736942 1817730 1867662 1890014 1919778 2025015 2056905 2075180 2120685 2178939 2293620 2430018 2544822 2565019 2605413 2700020 2742540 2827580 2835021 2879667 2905252 3040380 3112770 3199630 3440430 3473884 3631565 3635460 3735324 3780028 3839556 4050030 4113810 4241370 4342355 4357878 4669155 4725035 4799445 4860036 5089644 5130038 5210826 5670042 5759334 5805043 6075045 6079297 6225540 6362055 6399260 6536817 6880860 7263130 7695057 7816239 8100060 8227620 8482740 8505063 8684710 8715756 9338310 9450070 9598890 10260076 10421652 10894695 11340084 11518668 11610086 12150090 12158594 12724110 12825095 13027065 13073634 14175105 14398335 14526260 15390114 15632478 17010126 17369420 17415129 17955133 18237891 18676620 18900140 19197780 21789390 23085171 23220172 24300180 24317188 25448220 25650190 26054130 26147268 28350210 28796670 29025215 30396485 30780228 31264956 32684085 34020252 34830258 35910266 36475782 38475285 39081195 40635301 42525315 43578780 46170342 51300380 52108260 52245387 53865399 54713673 56700420 57593340 58050430 60792970 65368170 69660516 71820532 72951564 76950570 78162390 81270602 85050630 87075645 89775665 91189455 92340684 104490774 107730798 109427346 110295817 115425855 116100860 121585940 121905903 130736340 153901140 156324780 161596197 162541204 170101260 174151290 179551330 182378910 203176505 208981548 215461596 218854692 220591634 230851710 243811806 261226935 269326995 273568365 323192394 330887451 348302580 359102660 364757820 365717709 406353010 441183268 461703420 487623612 522453870 538653990 547136730 551479085 609529515 646384788 661774902 731435418 772070719 807980985 812706020 992662353 1044907740 1077307980 1094273460 1102958170 1219059030 1323549804 1462870836 1544141438 1615961970 1654437255 1828588545 1985324706 2205916340 2316212157 2438118060 3088282876 3231923940 3308874510 3657177090 3860353595 3970649412 4632424314 4963311765 6617749020 6948636471 7314354180 7720707190 9264848628 9926623530 11581060785 13897272942 15441414380 19853247060 23162121570 27794545884 34743182355 46324243140 69486364710 138972729420
• Sum of all divisors σ(n): 523500257280
• Sum of proper divisors (its aliquot sum) s(n): 384527527860
• 138972729420 is an abundant number, because the sum of its proper divisors (384527527860) is greater than itself. Its abundance is 245554798440

Bases of 138972729420

• Binary: 10000001011011011010111001000001001100₂
• Hexadecimal: 0x205B6B904C
• Base-36: 1RUCRWB0

Squares and roots of 138972729420

• 138972729420 squared (138972729420²) is 19313419522444533536400
• 138972729420 cubed (138972729420³) is 2684038625467629776112232920888000
• The square root of 138972729420 is 372790.4631559129
• The cube root of 138972729420 is 5179.7626817431

Scales and comparisons

• 138,972,729,420 seconds is equal to 4,418 years, 46 weeks, 6 days, 15 hours, 57 minutes.
• To count from 1 to 138,972,729,420 would take you about eight thousand, eight hundred thirty-seven 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 138972729420 cubic inches would be around 431.6 feet tall.

Recreational maths with 138972729420

• 138972729420 backwards is 024927279831
• The number of decimal digits it has is: 12
• The sum of 138972729420's digits is 54
• More coming soon!