20388538872

Names of 20388538872

• Cardinal: 20388538872 can be written as Twenty billion, three hundred eighty-eight million, five hundred thirty-eight thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.0388538872 × 10¹⁰

Factors of 20388538872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1281366

Divisors of 20388538872

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 17 18 24 26 34 36 39 51 52 68 72 78 102 104 117 136 153 156 204 221 234 306 312 408 442 468 612 663 884 936 1224 1326 1768 1989 2652 3978 5304 7956 15912 1281331 2562662 3843993 5125324 7687986 10250648 11531979 15375972 16657303 21782627 23063958 30751944 33314606 43565254 46127916 49971909 65347881 66629212 87130508 92255832 99943818 130695762 133258424 149915727 174261016 196043643 199887636 261391524 283174151 299831454 392087286 399775272 522783048 566348302 599662908 784174572 849522453 1132696604 1199325816 1568349144 1699044906 2265393208 2548567359 3398089812 5097134718 6796179624 10194269436 20388538872
• Sum of all divisors σ(n): 62964654480
• Sum of proper divisors (its aliquot sum) s(n): 42576115608
• 20388538872 is an abundant number, because the sum of its proper divisors (42576115608) is greater than itself. Its abundance is 22187576736

Bases of 20388538872

• Binary: 10010111111010000000110100111111000₂
• Hexadecimal: 0x4BF4069F8
• Base-36: 9D6T5A0

Squares and roots of 20388538872

• 20388538872 squared (20388538872²) is 415692517335055032384
• 20388538872 cubed (20388538872³) is 8475363048485303376020402830848
• The square root of 20388538872 is 142788.4409607443
• The cube root of 20388538872 is 2731.8826156255

Scales and comparisons

• 20,388,538,872 seconds is equal to 648 years, 15 weeks, 1 day, 11 hours, 1 minute, 12 seconds.
• To count from 1 to 20,388,538,872 would take you about one thousand, two hundred ninety-six 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 20388538872 cubic inches would be around 227.7 feet tall.

Recreational maths with 20388538872

• 20388538872 backwards is 27883588302
• The number of decimal digits it has is: 11
• The sum of 20388538872's digits is 54
• More coming soon!