161381

Names of 161381

• Cardinal: 161381 can be written as One hundred sixty-one thousand, three hundred eighty-one.

Scientific notation

• Scientific notation: 1.61381 × 10⁵

Factors of 161381

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 891

Divisors of 161381

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 17 187 863 9493 14671 161381
• Sum of all divisors σ(n): 186624
• Sum of proper divisors (its aliquot sum) s(n): 25243
• 161381 is a deficient number, because the sum of its proper divisors (25243) is less than itself. Its deficiency is 136138

Bases of 161381

• Binary: 100111011001100101₂
• Hexadecimal: 0x27665
• Base-36: 3GIT

Squares and roots of 161381

• 161381 squared (161381²) is 26043827161
• 161381 cubed (161381³) is 4202978871069341
• The square root of 161381 is 401.7225410653
• The cube root of 161381 is 54.4440972103

Scales and comparisons

• 161,381 seconds is equal to 1 day, 20 hours, 49 minutes, 41 seconds.
• To count from 1 to 161,381 would take you about twenty 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 161381 cubic inches would be around 4.5 feet tall.

Recreational maths with 161381

• 161381 backwards is 183161
• The number of decimal digits it has is: 6
• The sum of 161381's digits is 20
• More coming soon!