21042544688

Names of 21042544688

• Cardinal: 21042544688 can be written as Twenty-one billion, forty-two million, five hundred forty-four thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1042544688 × 10¹⁰

Factors of 21042544688

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 15530

Divisors of 21042544688

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 8 11 16 19 22 37 38 44 74 76 88 121 148 152 176 209 242 296 304 407 418 484 592 703 814 836 968 1406 1628 1672 1936 2299 2812 3256 3344 4477 4598 5624 6512 7733 8954 9196 11248 15461 15466 17908 18392 30922 30932 35816 36784 61844 61864 71632 85063 123688 123728 170071 170126 247376 293759 340142 340252 572057 587518 680284 680504 1144114 1175036 1360568 1361008 1870781 2288228 2350072 2721136 3231349 3741562 4576456 4700144 6292627 6462698 7483124 9152912 10869083 12585254 12925396 14966248 21738166 25170508 25850792 29932496 35544839 43476332 50341016 51701584 69218897 71089678 86952664 100682032 119559913 138437794 142179356 173905328 239119826 276875588 284358712 478239652 553751176 568717424 956479304 1107502352 1315159043 1912958608 2630318086 5260636172 10521272344 21042544688
• Sum of all divisors σ(n): 48449867760
• Sum of proper divisors (its aliquot sum) s(n): 27407323072
• 21042544688 is an abundant number, because the sum of its proper divisors (27407323072) is greater than itself. Its abundance is 6364778384

Bases of 21042544688

• Binary: 10011100110001110111100000000110000₂
• Hexadecimal: 0x4E63BC030
• Base-36: 9O06RE8

Squares and roots of 21042544688

• 21042544688 squared (21042544688²) is 442788686946477017344
• 21042544688 cubed (21042544688³) is 9317400732412084901626071068672
• The square root of 21042544688 is 145060.4863082983
• The cube root of 21042544688 is 2760.7860556011

Scales and comparisons

• 21,042,544,688 seconds is equal to 669 years, 4 weeks, 3 days, 23 hours, 18 minutes, 8 seconds.
• To count from 1 to 21,042,544,688 would take you about one thousand, three hundred thirty-eight 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 21042544688 cubic inches would be around 230.1 feet tall.

Recreational maths with 21042544688

• 21042544688 backwards is 88644524012
• 21042544688 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21042544688's digits is 44
• More coming soon!