21311499936

Names of 21311499936

• Cardinal: 21311499936 can be written as Twenty-one billion, three hundred eleven million, four hundred ninety-nine thousand, nine hundred thirty-six.

Scientific notation

• Scientific notation: 2.1311499936 × 10¹⁰

Factors of 21311499936

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 371213

Divisors of 21311499936

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 96 599 1198 1797 2396 3594 4792 7188 9584 14376 19168 28752 57504 370609 741218 1111827 1482436 2223654 2964872 4447308 5929744 8894616 11859488 17789232 35578464 221994791 443989582 665984373 887979164 1331968746 1775958328 2663937492 3551916656 5327874984 7103833312 10655749968 21311499936
• Sum of all divisors σ(n): 56036232000
• Sum of proper divisors (its aliquot sum) s(n): 34724732064
• 21311499936 is an abundant number, because the sum of its proper divisors (34724732064) is greater than itself. Its abundance is 13413232128

Bases of 21311499936

• Binary: 10011110110010000111010111010100000₂
• Hexadecimal: 0x4F643AEA0
• Base-36: 9SGBELC

Squares and roots of 21311499936

• 21311499936 squared (21311499936²) is 454180029522128004096
• 21311499936 cubed (21311499936³) is 9679257670093309069875711737856
• The square root of 21311499936 is 145984.5880084607
• The cube root of 21311499936 is 2772.4986224297

Scales and comparisons

• 21,311,499,936 seconds is equal to 677 years, 33 weeks, 1 day, 21 hours, 5 minutes, 36 seconds.
• To count from 1 to 21,311,499,936 would take you about one thousand, three hundred fifty-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 21311499936 cubic inches would be around 231 feet tall.

Recreational maths with 21311499936

• 21311499936 backwards is 63999411312
• 21311499936 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21311499936's digits is 48
• More coming soon!