20979997790

Names of 20979997790

• Cardinal: 20979997790 can be written as Twenty billion, nine hundred seventy-nine million, nine hundred ninety-seven thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 2.097999779 × 10¹⁰

Factors of 20979997790

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 478

Divisors of 20979997790

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 10 19 38 61 73 95 122 137 146 181 190 274 305 362 365 610 685 730 905 1159 1370 1387 1810 2318 2603 2774 3439 4453 5206 5795 6878 6935 8357 8906 10001 11041 11590 13015 13213 13870 16714 17195 20002 22082 22265 24797 26030 26426 34390 41785 44530 49594 50005 55205 66065 83570 84607 100010 110410 123985 132130 158783 169214 190019 209779 247970 251047 317566 380038 419558 423035 471143 502094 610061 793915 805993 846070 942286 950095 1048895 1220122 1255235 1512617 1587830 1611986 1810181 1900190 2097790 2355715 2510470 3025234 3050305 3620362 4029965 4711430 6100610 7563085 8059930 9050905 11591159 15126170 15313867 18101810 23182318 28739723 30627734 34393439 57479446 57955795 68786878 76569335 110421041 115911590 143698615 153138670 171967195 220842082 287397230 343934390 552105205 1104210410 2097999779 4195999558 10489998895 20979997790
• Sum of all divisors σ(n): 41483594880
• Sum of proper divisors (its aliquot sum) s(n): 20503597090
• 20979997790 is a deficient number, because the sum of its proper divisors (20503597090) is less than itself. Its deficiency is 476400700

Bases of 20979997790

• Binary: 10011100010100000010101110001011110₂
• Hexadecimal: 0x4E2815C5E
• Base-36: 9MYY5WE

Squares and roots of 20979997790

• 20979997790 squared (20979997790²) is 440160307268404884100
• 20979997790 cubed (20979997790³) is 9234562273736855405243206139000
• The square root of 20979997790 is 144844.7368391409
• The cube root of 20979997790 is 2758.0479523989

Scales and comparisons

• 20,979,997,790 seconds is equal to 667 years, 5 weeks, 1 day, 1 hour, 9 minutes, 50 seconds.
• To count from 1 to 20,979,997,790 would take you about one thousand, three hundred thirty-four 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 20979997790 cubic inches would be around 229.8 feet tall.

Recreational maths with 20979997790

• 20979997790 backwards is 09779997902
• The number of decimal digits it has is: 11
• The sum of 20979997790's digits is 68
• More coming soon!