20987427888

Names of 20987427888

• Cardinal: 20987427888 can be written as Twenty billion, nine hundred eighty-seven million, four hundred twenty-seven thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 2.0987427888 × 10¹⁰

Factors of 20987427888

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 771155

Divisors of 20987427888

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 243 252 324 336 378 432 486 504 567 648 756 972 1008 1134 1296 1512 1701 1944 2268 3024 3402 3888 4536 6804 9072 13608 27216 771143 1542286 2313429 3084572 4626858 5398001 6169144 6940287 9253716 10796002 12338288 13880574 16194003 18507432 20820861 21592004 27761148 32388006 37014864 41641722 43184008 48582009 55522296 62462583 64776012 83283444 86368016 97164018 111044592 124925166 129552024 145746027 166566888 187387749 194328036 249850332 259104048 291492054 333133776 374775498 388656072 437238081 499700664 582984108 749550996 777312144 874476162 999401328 1165968216 1311714243 1499101992 1748952324 2331936432 2623428486 2998203984 3497904648 5246856972 6995809296 10493713944 20987427888
• Sum of all divisors σ(n): 69612711168
• Sum of proper divisors (its aliquot sum) s(n): 48625283280
• 20987427888 is an abundant number, because the sum of its proper divisors (48625283280) is greater than itself. Its abundance is 27637855392

Bases of 20987427888

• Binary: 10011100010111100101011110000110000₂
• Hexadecimal: 0x4E2F2BC30
• Base-36: 9N3DF00

Squares and roots of 20987427888

• 20987427888 squared (20987427888²) is 440472129354000140544
• 20987427888 cubed (20987427888³) is 9244377051490885974009065091072
• The square root of 20987427888 is 144870.3830601687
• The cube root of 20987427888 is 2758.3735029241

Scales and comparisons

• 20,987,427,888 seconds is equal to 667 years, 17 weeks, 3 days, 1 hour, 4 minutes, 48 seconds.
• To count from 1 to 20,987,427,888 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 20987427888 cubic inches would be around 229.9 feet tall.

Recreational maths with 20987427888

• 20987427888 backwards is 88872478902
• 20987427888 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20987427888's digits is 63
• More coming soon!