21139117

Names of 21139117

• Cardinal: 21139117 can be written as Twenty-one million, one hundred thirty-nine thousand, one hundred seventeen.

Scientific notation

• Scientific notation: 2.1139117 × 10⁷

Factors of 21139117

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 22028

Divisors of 21139117

• Number of divisors d(n): 6
• Complete list of divisors:
  1 31 961 21997 681907 21139117
• Sum of all divisors σ(n): 21844014
• Sum of proper divisors (its aliquot sum) s(n): 704897
• 21139117 is a deficient number, because the sum of its proper divisors (704897) is less than itself. Its deficiency is 20434220

Bases of 21139117

• Binary: 1010000101000111010101101₂
• Hexadecimal: 0x1428EAD
• Base-36: CL31P

Squares and roots of 21139117

• 21139117 squared (21139117²) is 446862267539689
• 21139117 cubed (21139117³) is 9446273756406787914613
• The square root of 21139117 is 4597.7295483749
• The cube root of 21139117 is 276.5003046561

Scales and comparisons

• 21,139,117 seconds is equal to 34 weeks, 6 days, 15 hours, 58 minutes, 37 seconds.
• To count from 1 to 21,139,117 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 21139117 cubic inches would be around 23 feet tall.

Recreational maths with 21139117

• 21139117 backwards is 71193112
• The number of decimal digits it has is: 8
• The sum of 21139117's digits is 25
• More coming soon!