20421871

Names of 20421871

• Cardinal: 20421871 can be written as Twenty million, four hundred twenty-one thousand, eight hundred seventy-one.

Scientific notation

• Scientific notation: 2.0421871 × 10⁷

Factors of 20421871

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 20421871

Divisors of 20421871

• Number of divisors d(n): 2
• Complete list of divisors:
  1 20421871
• Sum of all divisors σ(n): 20421872
• Sum of proper divisors (its aliquot sum) s(n): 1
• 20421871 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 20421870

Bases of 20421871

• Binary: 1001101111001110011101111₂
• Hexadecimal: 0x1379CEF
• Base-36: C5PM7

Squares and roots of 20421871

• 20421871 squared (20421871²) is 417052815140641
• 20421871 cubed (20421871³) is 8516998790989017359311
• The square root of 20421871 is 4519.0564280611
• The cube root of 20421871 is 273.3370541169

Scales and comparisons

• 20,421,871 seconds is equal to 33 weeks, 5 days, 8 hours, 44 minutes, 31 seconds.
• To count from 1 to 20,421,871 would take you about fifty 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 20421871 cubic inches would be around 22.8 feet tall.

Recreational maths with 20421871

• 20421871 backwards is 17812402
• The number of decimal digits it has is: 8
• The sum of 20421871's digits is 25
• More coming soon!