129913013640

Names of 129913013640

• Cardinal: 129913013640 can be written as One hundred twenty-nine billion, nine hundred thirteen million, thirteen thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.2991301364 × 10¹¹

Factors of 129913013640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 279482

Divisors of 129913013640

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 3929 7858 11787 15716 19645 23574 31432 39290 47148 58935 78580 94296 117870 157160 235740 275543 471480 551086 826629 1102172 1377715 1653258 2204344 2755430 3306516 4133145 5510860 6613032 8266290 11021720 16532580 33065160 1082608447 2165216894 3247825341 4330433788 5413042235 6495650682 8660867576 10826084470 12991301364 16239126705 21652168940 25982602728 32478253410 43304337880 64956506820 129913013640
• Sum of all divisors σ(n): 389839651200
• Sum of proper divisors (its aliquot sum) s(n): 259926637560
• 129913013640 is an abundant number, because the sum of its proper divisors (259926637560) is greater than itself. Its abundance is 130013623920

Bases of 129913013640

• Binary: 1111000111111011010110100010110001000₂
• Hexadecimal: 0x1E3F6B4588
• Base-36: 1NOIUQVC

Squares and roots of 129913013640

• 129913013640 squared (129913013640²) is 16877391113026826049600
• 129913013640 cubed (129913013640³) is 2192592741874268834267592116544000
• The square root of 129913013640 is 360434.4789833515
• The cube root of 129913013640 is 5064.6668817565

Scales and comparisons

• 129,913,013,640 seconds is equal to 4,130 years, 43 weeks, 1 day, 20 hours, 14 minutes.
• To count from 1 to 129,913,013,640 would take you about eight thousand, two hundred sixty-one 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 129913013640 cubic inches would be around 422.1 feet tall.

Recreational maths with 129913013640

• 129913013640 backwards is 046310319921
• The number of decimal digits it has is: 12
• The sum of 129913013640's digits is 39
• More coming soon!