27 (number)

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Template:Multiple issues Template:Infobox number 27 (twenty-seven) is the natural number following 26 and preceding 28.

In mathematics

  • In base 10, it is the first composite number not evenly divisible by any of its digits.
  • 27 is the only positive integer that is 3 times the sum of its digits.
  • In the Collatz conjecture (aka the "3n + 1 conjecture") a starting value of 27 requires 112 steps to reach 1, many more than any lower number.
  • The unique simple formally real Jordan algebra, the exceptional Jordan algebra of self-adjoint 3 by 3 matrices of quaternions, is 27-dimensional.[1]
  • It is the twenty-eighth (and twenty-ninth) digit in π. (3.141592653589793238462643383279...). If you start counting with 0 it is considered one of few Self-Locating strings in pi.
  • 27 contains the decimal digits 2 and 7, and is the result of adding together the integers from 2 to 7 (2+3+4+5+6+7=27)

In science

Astronomy

Electronics

In religion, philosophy and the occult

  • The Greek Strongs number G27 is "Agapetos" which means "Beloved", as found in the New Testament of the Bible.
  • 27 - the highest level of knowledge in rupaloke (Buddhism).
  • 27 - number of grains in some Buddhist rosary (108 divided by 4).
  • In almost all Christian traditions today, the New Testament consists of 27 books
  • Pythagoras and Plato say that the number 3 in the cubed (i.e. 27) and number 2 in the cubed (i.e., 8) represent the Cosmos.
  • In the Kabbalah there are 27 letters, corresponding to 27 channels of communication with God and 27 combinations of the names of God and - 13 overt and 14 covert.
  • According to Feng Shui, to raise money, keep in the house 27 identical coins.
  • In ancient Incan culture there were 27 roads to El Dorado.

In astrology

  • 27 signs of the zodiac in Indian astrology

In art

Movies

  • Summer, or 27 missing kisses
  • Chapter 27-I
  • 27 Dresses
  • 27 fights
  • Order number 27
  • Number 27 (written by Michael Palin)

References

  • Three of the cube is zero (science-fiction story)

Other

  • The Minneapolis-based artist Deuce 7 (a.k.a. Deuce Seven, Twenty Seven, 27).

In sports

In other fields

Twenty-seven is also:

  • The 27 Club is a term used to refer to popular musicians who have died at the age of 27
  • A-27 - American attack aircraft
  • The 27th U.S.A state - Florida
  • The 27th state of India - Uttarakhand
  • The total number of letters in the Hebrew alphabet (22 regular letters and 5 final consonants)
  • The total number of letters in the Spanish alphabet (5 vowels and 22 consonants)
  • The code for international direct-dial phone calls to South Africa
  • The name of a cigarette, Marlboro Blend No. 27
  • Alternate name for The Hunt, a book by William Diehl
  • The number of the French department Eure
  • Abbé Faria's prisoner number in the book The Count of Monte Cristo
  • One of the anthropomorphic math symbols Lisa Simpson imagines talking to her in The Simpsons episode "Girls Just Want to Have Sums", which, instead of offering the expected pun-based aphorism, rather unhelpfully only says "twenty seven"
  • In Stephen King's novel "It", It returns every 27 years to Derry.
  • 27 is the number of bones in the human hand.[2]

See also

References

  1. V. G. Kac, "Classification of Simple Z-Graded Lie Superalgebras and Simple Jordan Superalgebras" Communications in Algebra 5 13 (1977): 1380
  2. Steve Jenkins, Bones (2010), ISBN 978-0-545-04651-0

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