138123669

Names of 138123669

• Cardinal: 138123669 can be written as One hundred thirty-eight million, one hundred twenty-three thousand, six hundred sixty-nine.

Scientific notation

• Scientific notation: 1.38123669 × 10⁸

Factors of 138123669

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 13579

Divisors of 138123669

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 6599 6977 19797 20931 46041223 138123669
• Sum of all divisors σ(n): 184219200
• Sum of proper divisors (its aliquot sum) s(n): 46095531
• 138123669 is a deficient number, because the sum of its proper divisors (46095531) is less than itself. Its deficiency is 92028138

Bases of 138123669

• Binary: 1000001110111001100110010101₂
• Hexadecimal: 0x83B9995
• Base-36: 2A8GWL

Squares and roots of 138123669

• 138123669 squared (138123669²) is 19078147938021561
• 138123669 cubed (138123669³) is 2635143790924322606427309
• The square root of 138123669 is 11752.6026479245
• The cube root of 138123669 is 516.9192458177

Scales and comparisons

• 138,123,669 seconds is equal to 4 years, 20 weeks, 2 days, 15 hours, 41 minutes, 9 seconds.
• To count from 1 to 138,123,669 would take you about six 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 138123669 cubic inches would be around 43.1 feet tall.

Recreational maths with 138123669

• 138123669 backwards is 966321831
• The number of decimal digits it has is: 9
• The sum of 138123669's digits is 39
• More coming soon!