21089182730

Names of 21089182730

• Cardinal: 21089182730 can be written as Twenty-one billion, eighty-nine million, one hundred eighty-two thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 2.108918273 × 10¹⁰

Factors of 21089182730

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1972

Divisors of 21089182730

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 7 10 11 14 22 35 43 55 70 77 86 110 154 215 301 385 430 433 473 602 770 866 946 1471 1505 2165 2365 2942 3010 3031 3311 4330 4730 4763 6062 6622 7355 9526 10297 14710 15155 16181 16555 18619 20594 23815 30310 32362 33110 33341 37238 47630 51485 63253 66682 80905 93095 102970 113267 126506 130333 161810 166705 186190 204809 226534 260666 316265 333410 409618 442771 566335 632530 636943 651665 695783 885542 1024045 1132670 1273886 1303330 1391566 1433663 2048090 2213855 2867326 3184715 3478915 4427710 4458601 4870481 6369430 6957830 7006373 7168315 8917202 9740962 14012746 14336630 22293005 24352405 27388549 35031865 44586010 48704810 49044611 54777098 70063730 98089222 136942745 191719843 245223055 273885490 301274039 383439686 490446110 602548078 958599215 1506370195 1917198430 2108918273 3012740390 4217836546 10544591365 21089182730
• Sum of all divisors σ(n): 48572891136
• Sum of proper divisors (its aliquot sum) s(n): 27483708406
• 21089182730 is an abundant number, because the sum of its proper divisors (27483708406) is greater than itself. Its abundance is 6394525676

Bases of 21089182730

• Binary: 10011101001000000110110010000001010₂
• Hexadecimal: 0x4E903640A
• Base-36: 9ORYDJE

Squares and roots of 21089182730

• 21089182730 squared (21089182730²) is 444753628219330252900
• 21089182730 cubed (21089182730³) is 9379490535347940221625212417000
• The square root of 21089182730 is 145221.1511109865
• The cube root of 21089182730 is 2762.8241907229

Scales and comparisons

• 21,089,182,730 seconds is equal to 670 years, 29 weeks, 4 days, 18 hours, 18 minutes, 50 seconds.
• To count from 1 to 21,089,182,730 would take you about one thousand, three hundred forty-one 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 21089182730 cubic inches would be around 230.2 feet tall.

Recreational maths with 21089182730

• 21089182730 backwards is 03728198012
• The number of decimal digits it has is: 11
• The sum of 21089182730's digits is 41
• More coming soon!