78401

Names of 78401

• Cardinal: 78401 can be written as Seventy-eight thousand, four hundred one.

Scientific notation

• Scientific notation: 7.8401 × 10⁴

Factors of 78401

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 78401

Divisors of 78401

• Number of divisors d(n): 2
• Complete list of divisors:
  1 78401
• Sum of all divisors σ(n): 78402
• Sum of proper divisors (its aliquot sum) s(n): 1
• 78401 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 78400

Bases of 78401

• Binary: 10011001001000001₂
• Hexadecimal: 0x13241
• Base-36: 1OHT

Squares and roots of 78401

• 78401 squared (78401²) is 6146716801
• 78401 cubed (78401³) is 481908743915201
• The square root of 78401 is 280.0017857085
• The cube root of 78401 is 42.7996811925

Scales and comparisons

• 78,401 seconds is equal to 21 hours, 46 minutes, 41 seconds.
• To count from 1 to 78,401 would take you about twenty-one 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 78401 cubic inches would be around 3.6 feet tall.

Recreational maths with 78401

• 78401 backwards is 10487
• The number of decimal digits it has is: 5
• The sum of 78401's digits is 20
• More coming soon!