20997744690

Names of 20997744690

• Cardinal: 20997744690 can be written as Twenty billion, nine hundred ninety-seven million, seven hundred forty-four thousand, six hundred ninety.

Scientific notation

• Scientific notation: 2.099774469 × 10¹⁰

Factors of 20997744690

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4471

Divisors of 20997744690

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 10 13 15 26 30 39 65 78 130 169 195 338 390 507 845 1014 1327 1690 2535 2654 3121 3981 5070 6242 6635 7962 9363 13270 15605 17251 18726 19905 31210 34502 39810 40573 46815 51753 81146 86255 93630 103506 121719 172510 202865 224263 243438 258765 405730 448526 517530 527449 608595 672789 1054898 1121315 1217190 1345578 1582347 2242630 2637245 3164694 3363945 4141567 5274490 6727890 7911735 8283134 12424701 15823470 20707835 24849402 41415670 53840371 62123505 107680742 124247010 161521113 269201855 323042226 538403710 699924823 807605565 1399849646 1615211130 2099774469 3499624115 4199548938 6999248230 10498872345 20997744690
• Sum of all divisors σ(n): 54627906816
• Sum of proper divisors (its aliquot sum) s(n): 33630162126
• 20997744690 is an abundant number, because the sum of its proper divisors (33630162126) is greater than itself. Its abundance is 12632417436

Bases of 20997744690

• Binary: 10011100011100100000010100000110010₂
• Hexadecimal: 0x4E3902832
• Base-36: 9N9IJHU

Squares and roots of 20997744690

• 20997744690 squared (20997744690²) is 440905282066423196100
• 20997744690 cubed (20997744690³) is 9258016545303189893201603709000
• The square root of 20997744690 is 144905.9856941735
• The cube root of 20997744690 is 2758.8254073011

Scales and comparisons

• 20,997,744,690 seconds is equal to 667 years, 34 weeks, 3 days, 10 hours, 51 minutes, 30 seconds.
• To count from 1 to 20,997,744,690 would take you about one thousand, three hundred thirty-five 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 20997744690 cubic inches would be around 229.9 feet tall.

Recreational maths with 20997744690

• 20997744690 backwards is 09644779902
• The number of decimal digits it has is: 11
• The sum of 20997744690's digits is 57
• More coming soon!