21072342442

Names of 21072342442

• Cardinal: 21072342442 can be written as Twenty-one billion, seventy-two million, three hundred forty-two thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 2.1072342442 × 10¹⁰

Factors of 21072342442

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 41758

Divisors of 21072342442

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 29 31 58 62 283 566 899 1798 8207 8773 16414 17546 41413 82826 254417 508834 1200977 1283803 2401954 2567606 11719879 23439758 37230287 74460574 339876491 363316249 679752982 726632498 10536171221 21072342442
• Sum of all divisors σ(n): 33873338880
• Sum of proper divisors (its aliquot sum) s(n): 12800996438
• 21072342442 is a deficient number, because the sum of its proper divisors (12800996438) is less than itself. Its deficiency is 8271346004

Bases of 21072342442

• Binary: 10011101000000000100110110110101010₂
• Hexadecimal: 0x4E8026DAA
• Base-36: 9OHXFHM

Squares and roots of 21072342442

• 21072342442 squared (21072342442²) is 444043615992914523364
• 21072342442 cubed (21072342442³) is 9357039135386642681961417814888
• The square root of 21072342442 is 145163.1580050531
• The cube root of 21072342442 is 2762.0885980505

Scales and comparisons

• 21,072,342,442 seconds is equal to 670 years, 1 week, 5 days, 20 hours, 27 minutes, 22 seconds.
• To count from 1 to 21,072,342,442 would take you about one thousand, three hundred forty 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 21072342442 cubic inches would be around 230.2 feet tall.

Recreational maths with 21072342442

• 21072342442 backwards is 24424327012
• 21072342442 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21072342442's digits is 31
• More coming soon!