186 (number)

From Wikipedia, the free encyclopedia
← 185 186 187 →
180 181 182 183 184 185 186 187 188 189
List of numbersIntegers
0 100 200 300 400 500 600 700 800 900
Cardinalone hundred eighty-six
Ordinal186th
(one hundred eighty-sixth)
Factorization2 × 3 × 31
Greek numeralΡΠϚ´
Roman numeralCLXXXVI
Binary101110102
Ternary202203
Octal2728
Duodecimal13612
HexadecimalBA16

186 (one hundred [and] eighty-six) is the natural number following 185 and preceding 187.

In mathematics[]

  • 186 is an even number
  • 186 is an abundant number, as 198 is greater than 186
  • 186 is a composite number
  • There is no integer with exactly 186 coprimes less than it. 186 is a nontotient, nor is it ever the difference between an integer and the total of coprimes below it, thus also a noncototient
  • 186 is an odious number
  • 186 is a sphenic number, so the Möbius function returns -1 (and the Mertens function returns -4)
  • 186 is a square-free number
  • 186 is a 14-gonal number[1] and a 63-gonal number[2]
  • 186 factors: 2 × 3 × 31
  • 186 divisors: 1, 2, 3, 6, 31, 62, 93, 186
  • There are 186 degree-11 irreducible polynomials over a Galois field with 2 elements (sequence A001037 in the OEIS)

In astronomy[]

In geography[]

In the military[]

In transportation[]

  • The 186 is a legendary 6-cylinder Holden engine (L6), that was first used in the Holden HR series. It has a piston displacement of 186 cubic inches (3048cc).
  • London Buses route 186
  • Cosmos 186 and Cosmos 188 incorporated a Soyuz programme descent module for landing scientific instruments and test objects

In other fields[]

186 is also:

  • The year AD 186 or 186 BC
  • The atomic number of an element temporarily called Unocthexium
  • Minuscule 186 is a Greek minuscule manuscript of the New Testament, on parchment

See also[]

References[]

  1. ^ Sloane, N. J. A. (ed.). "Sequence A051866 (14-gonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A098140 (63-gonal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.

External links[]

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