21828835665

Names of 21828835665

• Cardinal: 21828835665 can be written as Twenty-one billion, eight hundred twenty-eight million, eight hundred thirty-five thousand, six hundred sixty-five.

Scientific notation

• Scientific notation: 2.1828835665 × 10¹⁰

Factors of 21828835665

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 29218

Divisors of 21828835665

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 61 63 65 91 105 117 135 183 189 195 273 305 315 351 427 455 549 585 793 819 915 945 1281 1365 1647 1755 2135 2379 2457 2745 3843 3965 4095 5551 6405 7137 8235 11529 11895 12285 16653 19215 21411 27755 29129 35685 49959 57645 83265 87387 107055 145645 149877 203903 249795 262161 378677 436935 611709 749385 786483 1019515 1136031 1310805 1776869 1835127 1893385 2650739 3058545 3408093 3932415 5330607 5505381 5680155 7952217 8884345 9175635 10224279 12438083 13253695 15991821 17040465 23099297 23856651 26653035 27526905 37314249 39761085 47975463 51121395 62190415 69297891 71569953 79959105 111942747 115496485 119283255 161695079 186571245 207893673 239877315 335828241 346489455 357849765 485085237 559713735 623681019 808475395 1039468365 1455255711 1679141205 2425426185 3118405095 4365767133 7276278555 21828835665
• Sum of all divisors σ(n): 48546892800
• Sum of proper divisors (its aliquot sum) s(n): 26718057135
• 21828835665 is an abundant number, because the sum of its proper divisors (26718057135) is greater than itself. Its abundance is 4889221470

Bases of 21828835665

• Binary: 10100010101000110011001100101010001₂
• Hexadecimal: 0x515199951
• Base-36: A10BPE9

Squares and roots of 21828835665

• 21828835665 squared (21828835665²) is 476498066489575992225
• 21828835665 cubed (21828835665³) is 10401397988091197769808842704625
• The square root of 21828835665 is 147745.8482157789
• The cube root of 21828835665 is 2794.7535970049

Scales and comparisons

• 21,828,835,665 seconds is equal to 694 years, 4 weeks, 4 days, 13 hours, 27 minutes, 45 seconds.
• To count from 1 to 21,828,835,665 would take you about one thousand, three hundred eighty-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 21828835665 cubic inches would be around 232.9 feet tall.

Recreational maths with 21828835665

• 21828835665 backwards is 56653882812
• The number of decimal digits it has is: 11
• The sum of 21828835665's digits is 54
• More coming soon!