72168313938

Names of 72168313938

• Cardinal: 72168313938 can be written as Seventy-two billion, one hundred sixty-eight million, three hundred thirteen thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 7.2168313938 × 10¹⁰

Factors of 72168313938

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 25646246

Divisors of 72168313938

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 7 14 21 42 67 134 201 402 469 938 1407 2814 25646167 51292334 76938501 153877002 179523169 359046338 538569507 1077139014 1718293189 3436586378 5154879567 10309759134 12028052323 24056104646 36084156969 72168313938
• Sum of all divisors σ(n): 167418184704
• Sum of proper divisors (its aliquot sum) s(n): 95249870766
• 72168313938 is an abundant number, because the sum of its proper divisors (95249870766) is greater than itself. Its abundance is 23081556828

Bases of 72168313938

• Binary: 1000011001101100100010001010001010010₂
• Hexadecimal: 0x10CD911452
• Base-36: X5J5FF6

Squares and roots of 72168313938

• 72168313938 squared (72168313938²) is 5208265536653725067844
• 72168313938 cubed (72168313938³) is 375871742321692076693306140809672
• The square root of 72168313938 is 268641.6087243375
• The cube root of 72168313938 is 4163.4068557241

Scales and comparisons

• 72,168,313,938 seconds is equal to 2,294 years, 37 weeks, 6 days, 9 hours, 52 minutes, 18 seconds.
• To count from 1 to 72,168,313,938 would take you about four thousand, five hundred eighty-nine 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 72168313938 cubic inches would be around 347 feet tall.

Recreational maths with 72168313938

• 72168313938 backwards is 83931386127
• The number of decimal digits it has is: 11
• The sum of 72168313938's digits is 51
• More coming soon!