21858715242

Names of 21858715242

• Cardinal: 21858715242 can be written as Twenty-one billion, eight hundred fifty-eight million, seven hundred fifteen thousand, two hundred forty-two.

Scientific notation

• Scientific notation: 2.1858715242 × 10¹⁰

Factors of 21858715242

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 241

Divisors of 21858715242

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 27 39 42 54 63 78 79 81 91 117 126 137 158 162 182 189 234 237 273 274 351 378 411 474 546 553 567 702 711 819 822 959 1027 1053 1106 1134 1233 1422 1638 1659 1781 1918 2054 2106 2133 2457 2466 2877 3081 3318 3562 3699 4266 4914 4977 5343 5754 6162 6399 7189 7371 7398 8631 9243 9954 10686 10823 11097 12467 12798 14378 14742 14931 16029 17262 18486 18769 21567 21646 22194 24934 25893 27729 29862 32058 32469 37401 37538 43134 44793 48087 51786 55458 56307 64701 64938 74802 75761 77679 83187 89586 96174 97407 112203 112614 129402 131383 140699 144261 151522 155358 166374 168921 194103 194814 224406 227283 243997 262766 281398 288522 292221 336609 337842 388206 394149 422097 454566 487994 506763 582309 584442 673218 681849 731991 788298 844194 876663 984893 1009827 1013526 1164618 1182447 1266291 1363698 1463982 1482751 1520289 1707979 1753326 1969786 2019654 2045547 2195973 2364894 2532582 2954679 2965502 3040578 3415958 3547341 3798873 4091094 4391946 4448253 5123937 5909358 6136641 6587919 7094682 7597746 8864037 8896506 10247874 10379257 10642023 11396619 12273282 13175838 13344759 15371811 17728074 19275763 19763757 20758514 21284046 22793238 26592111 26689518 30743622 31137771 38551526 39527514 40034277 46115433 53184222 57827289 62275542 79776333 80068554 92230866 93413313 115654578 120102831 134930341 138346299 159552666 173481867 186826626 240205662 269860682 276692598 280239939 346963734 404791023 520445601 560479878 809582046 840719817 1040891202 1214373069 1561336803 1681439634 2428746138 3122673606 3643119207 7286238414 10929357621 21858715242
• Sum of all divisors σ(n): 61494639360
• Sum of proper divisors (its aliquot sum) s(n): 39635924118
• 21858715242 is an abundant number, because the sum of its proper divisors (39635924118) is greater than itself. Its abundance is 17777208876

Bases of 21858715242

• Binary: 10100010110111000011000011001101010₂
• Hexadecimal: 0x516E1866A
• Base-36: A1I44MI

Squares and roots of 21858715242

• 21858715242 squared (21858715242²) is 477803432030843118564
• 21858715242 cubed (21858715242³) is 10444169162412501489865719952488
• The square root of 21858715242 is 147846.9317977211
• The cube root of 21858715242 is 2796.0281799183

Scales and comparisons

• 21,858,715,242 seconds is equal to 695 years, 2 weeks, 9 hours, 20 minutes, 42 seconds.
• To count from 1 to 21,858,715,242 would take you about one thousand, three hundred ninety 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 21858715242 cubic inches would be around 233 feet tall.

Recreational maths with 21858715242

• 21858715242 backwards is 24251785812
• The number of decimal digits it has is: 11
• The sum of 21858715242's digits is 45
• More coming soon!