38139635721

Names of 38139635721

• Cardinal: 38139635721 can be written as Thirty-eight billion, one hundred thirty-nine million, six hundred thirty-five thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 3.8139635721 × 10¹⁰

Factors of 38139635721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5107

Divisors of 38139635721

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 11 33 79 121 237 281 363 843 869 2607 3091 4733 9273 9559 14199 22199 28677 34001 52063 66597 102003 156189 244189 373907 572693 732567 1121721 1329973 1718079 2686079 3989919 4112977 8058237 12338931 14629703 43889109 45242747 105067867 135728241 160926733 315203601 482780199 1155746537 3467239611 12713211907 38139635721
• Sum of all divisors σ(n): 56817089280
• Sum of proper divisors (its aliquot sum) s(n): 18677453559
• 38139635721 is a deficient number, because the sum of its proper divisors (18677453559) is less than itself. Its deficiency is 19462182162

Bases of 38139635721

• Binary: 100011100001010011001010100000001001₂
• Hexadecimal: 0x8E14CA809
• Base-36: HIRCR9L

Squares and roots of 38139635721

• 38139635721 squared (38139635721²) is 1454631812930579189841
• 38139635721 cubed (38139635721³) is 55479127453350107762079043910361
• The square root of 38139635721 is 195293.7165425453
• The cube root of 38139635721 is 3366.0883718095

Scales and comparisons

• 38,139,635,721 seconds is equal to 1,212 years, 37 weeks, 3 days, 23 hours, 15 minutes, 21 seconds.
• To count from 1 to 38,139,635,721 would take you about two thousand, four hundred twenty-five 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 38139635721 cubic inches would be around 280.5 feet tall.

Recreational maths with 38139635721

• 38139635721 backwards is 12753693183
• The number of decimal digits it has is: 11
• The sum of 38139635721's digits is 48
• More coming soon!