28020890709

Names of 28020890709

• Cardinal: 28020890709 can be written as Twenty-eight billion, twenty million, eight hundred ninety thousand, seven hundred nine.

Scientific notation

• Scientific notation: 2.8020890709 × 10¹⁰

Factors of 28020890709

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8313

Divisors of 28020890709

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 9 21 27 59 63 177 189 317 413 531 951 1239 1593 2219 2853 3717 6657 7927 8559 11151 18703 19971 23781 55489 56109 59913 71343 130921 166467 168327 214029 392763 467693 499401 504981 1178289 1403079 1498203 2512859 3273851 3534867 4209237 7538577 9821553 12627711 17590013 22615731 29464659 52770039 67847193 88393977 148258681 158310117 444776043 474930351 1037810767 1334328129 3113432301 4002984387 9340296903 28020890709
• Sum of all divisors σ(n): 48405196800
• Sum of proper divisors (its aliquot sum) s(n): 20384306091
• 28020890709 is a deficient number, because the sum of its proper divisors (20384306091) is less than itself. Its deficiency is 7636584618

Bases of 28020890709

• Binary: 11010000110001011001101110001010101₂
• Hexadecimal: 0x6862CDC55
• Base-36: CVEWXN9

Squares and roots of 28020890709

• 28020890709 squared (28020890709²) is 785170316125722522681
• 28020890709 cubed (28020890709³) is 22001171616109851111704074670829
• The square root of 28020890709 is 167394.4166004351
• The cube root of 28020890709 is 3037.3439805245

Scales and comparisons

• 28,020,890,709 seconds is equal to 890 years, 50 weeks, 5 days, 20 hours, 45 minutes, 9 seconds.
• To count from 1 to 28,020,890,709 would take you about one thousand, seven hundred eighty-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 28020890709 cubic inches would be around 253.1 feet tall.

Recreational maths with 28020890709

• 28020890709 backwards is 90709802082
• The number of decimal digits it has is: 11
• The sum of 28020890709's digits is 45
• More coming soon!