21084736590

Names of 21084736590

• Cardinal: 21084736590 can be written as Twenty-one billion, eighty-four million, seven hundred thirty-six thousand, five hundred ninety.

Scientific notation

• Scientific notation: 2.108473659 × 10¹⁰

Factors of 21084736590

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 40526

Divisors of 21084736590

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 653 810 1306 1959 3265 3918 5877 6530 9795 11754 17631 19590 29385 35262 39863 52893 58770 79726 88155 105786 119589 176310 199315 239178 264465 358767 398630 528930 597945 717534 1076301 1195890 1793835 2152602 3228903 3587670 5381505 6457806 10763010 16144515 26030539 32289030 52061078 78091617 130152695 156183234 234274851 260305390 390458085 468549702 702824553 780916170 1171374255 1405649106 2108473659 2342748510 3514122765 4216947318 7028245530 10542368295 21084736590
• Sum of all divisors σ(n): 56782759968
• Sum of proper divisors (its aliquot sum) s(n): 35698023378
• 21084736590 is an abundant number, because the sum of its proper divisors (35698023378) is greater than itself. Its abundance is 14613286788

Bases of 21084736590

• Binary: 10011101000101111111000110001001110₂
• Hexadecimal: 0x4E8BF8C4E
• Base-36: 9OPB2VI

Squares and roots of 21084736590

• 21084736590 squared (21084736590²) is 444566117069684828100
• 21084736590 cubed (21084736590³) is 9373559475253407274807930179000
• The square root of 21084736590 is 145205.8421345367
• The cube root of 21084736590 is 2762.6300190371

Scales and comparisons

• 21,084,736,590 seconds is equal to 670 years, 22 weeks, 2 days, 7 hours, 16 minutes, 30 seconds.
• To count from 1 to 21,084,736,590 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 21084736590 cubic inches would be around 230.2 feet tall.

Recreational maths with 21084736590

• 21084736590 backwards is 09563748012
• 21084736590 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21084736590's digits is 45
• More coming soon!