157991

Names of 157991

• Cardinal: 157991 can be written as One hundred fifty-seven thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 1.57991 × 10⁵

Factors of 157991

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 157991

Divisors of 157991

• Number of divisors d(n): 2
• Complete list of divisors:
  1 157991
• Sum of all divisors σ(n): 157992
• Sum of proper divisors (its aliquot sum) s(n): 1
• 157991 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 157990

Bases of 157991

• Binary: 100110100100100111₂
• Hexadecimal: 0x26927
• Base-36: 3DWN

Squares and roots of 157991

• 157991 squared (157991²) is 24961156081
• 157991 cubed (157991³) is 3943638010393271
• The square root of 157991 is 397.4808171471
• The cube root of 157991 is 54.0601752595

Scales and comparisons

• 157,991 seconds is equal to 1 day, 19 hours, 53 minutes, 11 seconds.
• To count from 1 to 157,991 would take you about nineteen hours.

  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 157991 cubic inches would be around 4.5 feet tall.

Recreational maths with 157991

• 157991 backwards is 199751
• The number of decimal digits it has is: 6
• The sum of 157991's digits is 32
• More coming soon!