129731307849

Names of 129731307849

• Cardinal: 129731307849 can be written as One hundred twenty-nine billion, seven hundred thirty-one million, three hundred seven thousand, eight hundred forty-nine.

Scientific notation

• Scientific notation: 1.29731307849 × 10¹¹

Factors of 129731307849

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 6910

Divisors of 129731307849

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 9 11 13 19 33 39 57 71 99 117 121 143 171 209 213 247 363 429 627 639 741 781 923 1089 1287 1349 1573 1881 2223 2299 2343 2717 2769 4047 4719 6793 6897 7029 8151 8307 8591 10153 12141 14157 14839 17537 20379 20691 24453 25773 29887 30459 44517 52611 61137 74723 77319 88309 89661 91377 111683 129067 133551 157833 163229 192907 224169 264927 268983 335049 387201 482303 489687 578721 672507 794781 821953 971399 1005147 1161603 1419737 1446909 1469061 1677871 1736163 2121977 2465859 2914197 4259211 4340727 5033613 5305333 6269939 6365931 7397577 8742591 9163757 10685389 12777633 15100839 15617107 15915999 18456581 18809817 19097793 27491271 32056167 46851321 47747997 55369743 56429451 58358663 68969329 82473813 96168501 100801327 119128841 140553963 166109229 175075989 203022391 206907987 302403981 357386523 525227967 609067173 620723961 758662619 907211943 1072159569 1108814597 1310417251 1827201519 2275987857 3326443791 3931251753 6827963571 9979331373 11793755259 14414589761 43243769283 129731307849
• Sum of all divisors σ(n): 236816012160
• Sum of proper divisors (its aliquot sum) s(n): 107084704311
• 129731307849 is a deficient number, because the sum of its proper divisors (107084704311) is less than itself. Its deficiency is 22646603538

Bases of 129731307849

• Binary: 1111000110100100101101010100101001001₂
• Hexadecimal: 0x1E3496A949
• Base-36: 1NLIO5S9

Squares and roots of 129731307849

• 129731307849 squared (129731307849²) is 16830212236212009006801
• 129731307849 cubed (129731307849³) is 2183405444780026846092061265681049
• The square root of 129731307849 is 360182.3258420659
• The cube root of 129731307849 is 5062.3045095137

Scales and comparisons

• 129,731,307,849 seconds is equal to 4,125 years, 2 weeks, 5 days, 18 hours, 24 minutes, 9 seconds.
• To count from 1 to 129,731,307,849 would take you about eight thousand, two hundred fifty 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 129731307849 cubic inches would be around 421.9 feet tall.

Recreational maths with 129731307849

• 129731307849 backwards is 948703137921
• The number of decimal digits it has is: 12
• The sum of 129731307849's digits is 54
• More coming soon!