20438649090

Names of 20438649090

• Cardinal: 20438649090 can be written as Twenty billion, four hundred thirty-eight million, six hundred forty-nine thousand and ninety.

Scientific notation

• Scientific notation: 2.043864909 × 10¹⁰

Factors of 20438649090

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 46020

Divisors of 20438649090

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 30 45 90 5623 11246 16869 28115 33738 40387 50607 56230 80774 84345 101214 121161 168690 201935 242322 253035 363483 403870 506070 605805 726966 1211610 1817415 3634830 227096101 454192202 681288303 1135480505 1362576606 2043864909 2270961010 3406441515 4087729818 6812883030 10219324545 20438649090
• Sum of all divisors σ(n): 53151254208
• Sum of proper divisors (its aliquot sum) s(n): 32712605118
• 20438649090 is an abundant number, because the sum of its proper divisors (32712605118) is greater than itself. Its abundance is 12273956028

Bases of 20438649090

• Binary: 10011000010001111010000100100000010₂
• Hexadecimal: 0x4C23D0902
• Base-36: 9E0N6KI

Squares and roots of 20438649090

• 20438649090 squared (20438649090²) is 417738376624157828100
• 20438649090 cubed (20438649090³) is 8538008091247420665312441429000
• The square root of 20438649090 is 142963.8034259021
• The cube root of 20438649090 is 2734.1188921779

Scales and comparisons

• 20,438,649,090 seconds is equal to 649 years, 46 weeks, 10 hours, 31 minutes, 30 seconds.
• To count from 1 to 20,438,649,090 would take you about one thousand, two hundred ninety-nine 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 20438649090 cubic inches would be around 227.8 feet tall.

Recreational maths with 20438649090

• 20438649090 backwards is 09094683402
• 20438649090 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20438649090's digits is 45
• More coming soon!