8129138

Names of 8129138

• Cardinal: 8129138 can be written as Eight million, one hundred twenty-nine thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 8.129138 × 10⁶

Factors of 8129138

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 68952

Divisors of 8129138

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 59 118 68891 137782 4064569 8129138
• Sum of all divisors σ(n): 12400560
• Sum of proper divisors (its aliquot sum) s(n): 4271422
• 8129138 is a deficient number, because the sum of its proper divisors (4271422) is less than itself. Its deficiency is 3857716

Bases of 8129138

• Binary: 11111000000101001110010₂
• Hexadecimal: 0x7C0A72
• Base-36: 4U8HE

Squares and roots of 8129138

• 8129138 squared (8129138²) is 66082884623044
• 8129138 cubed (8129138³) is 537196888538802656072
• The square root of 8129138 is 2851.1643235703
• The cube root of 8129138 is 201.0704108823

Scales and comparisons

• 8,129,138 seconds is equal to 13 weeks, 3 days, 2 hours, 5 minutes, 38 seconds.
• To count from 1 to 8,129,138 would take you about twenty weeks!

  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 8129138 cubic inches would be around 16.8 feet tall.

Recreational maths with 8129138

• 8129138 backwards is 8319218
• The number of decimal digits it has is: 7
• The sum of 8129138's digits is 32
• More coming soon!