21001368696

Names of 21001368696

• Cardinal: 21001368696 can be written as Twenty-one billion, one million, three hundred sixty-eight thousand, six hundred ninety-six.

Scientific notation

• Scientific notation: 2.1001368696 × 10¹⁰

Factors of 21001368696

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 11364400

Divisors of 21001368696

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 21 22 24 28 33 42 44 56 66 77 84 88 132 154 168 231 264 308 462 616 924 1848 11364377 22728754 34093131 45457508 68186262 79550639 90915016 125008147 136372524 159101278 238651917 250016294 272745048 318202556 375024441 477303834 500032588 636405112 750048882 875057029 954607668 1000065176 1500097764 1750114058 1909215336 2625171087 3000195528 3500228116 5250342174 7000456232 10500684348 21001368696
• Sum of all divisors σ(n): 65458817280
• Sum of proper divisors (its aliquot sum) s(n): 44457448584
• 21001368696 is an abundant number, because the sum of its proper divisors (44457448584) is greater than itself. Its abundance is 23456079888

Bases of 21001368696

• Binary: 10011100011110001110111010001111000₂
• Hexadecimal: 0x4E3C77478
• Base-36: 9NBO7SO

Squares and roots of 21001368696

• 21001368696 squared (21001368696²) is 441057487105328740416
• 21001368696 cubed (21001368696³) is 9262810902830274663761692417536
• The square root of 21001368696 is 144918.4898348033
• The cube root of 21001368696 is 2758.9841136263

Scales and comparisons

• 21,001,368,696 seconds is equal to 667 years, 40 weeks, 3 days, 9 hours, 31 minutes, 36 seconds.
• To count from 1 to 21,001,368,696 would take you about one thousand, three hundred thirty-five years!

  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 21001368696 cubic inches would be around 229.9 feet tall.

Recreational maths with 21001368696

• 21001368696 backwards is 69686310012
• 21001368696 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21001368696's digits is 42
• More coming soon!