21135013

Names of 21135013

• Cardinal: 21135013 can be written as Twenty-one million, one hundred thirty-five thousand and thirteen.

Scientific notation

• Scientific notation: 2.1135013 × 10⁷

Factors of 21135013

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21135013

Divisors of 21135013

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21135013
• Sum of all divisors σ(n): 21135014
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21135013 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21135012

Bases of 21135013

• Binary: 1010000100111111010100101₂
• Hexadecimal: 0x1427EA5
• Base-36: CKZVP

Squares and roots of 21135013

• 21135013 squared (21135013²) is 446688774510169
• 21135013 cubed (21135013³) is 9440773056226490447197
• The square root of 21135013 is 4597.2832194677
• The cube root of 21135013 is 276.4824100157

Scales and comparisons

• 21,135,013 seconds is equal to 34 weeks, 6 days, 14 hours, 50 minutes, 13 seconds.
• To count from 1 to 21,135,013 would take you about two days!

  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 21135013 cubic inches would be around 23 feet tall.

Recreational maths with 21135013

• 21135013 backwards is 31053112
• The number of decimal digits it has is: 8
• The sum of 21135013's digits is 16
• More coming soon!