20428401

Names of 20428401

• Cardinal: 20428401 can be written as Twenty million, four hundred twenty-eight thousand, four hundred one.

Scientific notation

• Scientific notation: 2.0428401 × 10⁷

Factors of 20428401

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 51228

Divisors of 20428401

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 7 19 21 57 133 399 51199 153597 358393 972781 1075179 2918343 6809467 20428401
• Sum of all divisors σ(n): 32768000
• Sum of proper divisors (its aliquot sum) s(n): 12339599
• 20428401 is a deficient number, because the sum of its proper divisors (12339599) is less than itself. Its deficiency is 8088802

Bases of 20428401

• Binary: 1001101111011011001110001₂
• Hexadecimal: 0x137B671
• Base-36: C5UNL

Squares and roots of 20428401

• 20428401 squared (20428401²) is 417319567416801
• 20428401 cubed (20428401³) is 8525171468336944965201
• The square root of 20428401 is 4519.7788662721
• The cube root of 20428401 is 273.3661846627

Scales and comparisons

• 20,428,401 seconds is equal to 33 weeks, 5 days, 10 hours, 33 minutes, 21 seconds.
• To count from 1 to 20,428,401 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 20428401 cubic inches would be around 22.8 feet tall.

Recreational maths with 20428401

• 20428401 backwards is 10482402
• 20428401 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20428401's digits is 21
• More coming soon!