138700261890

Names of 138700261890

• Cardinal: 138700261890 can be written as One hundred thirty-eight billion, seven hundred million, two hundred sixty-one thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.3870026189 × 10¹¹

Factors of 138700261890

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 312688

Divisors of 138700261890

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 30 45 90 5009 10018 15027 25045 30054 45081 50090 75135 90162 150270 225405 307669 450810 615338 923007 1538345 1846014 2769021 3076690 4615035 5538042 9230070 13845105 27690210 1541114021 3082228042 4623342063 7705570105 9246684126 13870026189 15411140210 23116710315 27740052378 46233420630 69350130945 138700261890
• Sum of all divisors σ(n): 360693847800
• Sum of proper divisors (its aliquot sum) s(n): 221993585910
• 138700261890 is an abundant number, because the sum of its proper divisors (221993585910) is greater than itself. Its abundance is 83293324020

Bases of 138700261890

• Binary: 10000001001011001011100000101000000010₂
• Hexadecimal: 0x204B2E0A02
• Base-36: 1RPUJZ0I

Squares and roots of 138700261890

• 138700261890 squared (138700261890²) is 19237762648354586372100
• 138700261890 cubed (138700261890³) is 2668282717504441107392894989269000
• The square root of 138700261890 is 372424.8405920315
• The cube root of 138700261890 is 5176.3753493497

Scales and comparisons

• 138,700,261,890 seconds is equal to 4,410 years, 12 weeks, 3 days, 2 hours, 31 minutes, 30 seconds.
• To count from 1 to 138,700,261,890 would take you about eight thousand, eight hundred twenty 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 138700261890 cubic inches would be around 431.4 feet tall.

Recreational maths with 138700261890

• 138700261890 backwards is 098162007831
• 138700261890 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138700261890's digits is 45
• More coming soon!