112 (number)

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← 111 112 113 →
Cardinal one hundred twelve
Ordinal 112th
(one hundred twelfth)
Factorization 24× 7
Divisors 1, 2, 4, 7, 8, 14, 16, 28, 56, 112
Roman numeral CXII
Binary 11100002
Ternary 110113
Quaternary 13004
Quinary 4225
Senary 3046
Octal 1608
Duodecimal 9412
Hexadecimal 7016
Vigesimal 5C20
Base 36 3436

112 (one hundred [and] twelve) is the natural number following 111 and preceding 113.

In mathematics[edit]

112 is an abundant number, a heptagonal number,[1] and a Harshad number.[2] It is also the sum of six consecutive primes ().

In science[edit]

In telephony[edit]

112 is an emergency telephone number:

  • throughout the European Union – in some cases, alongside other, country-specific emergency numbers.
  • in various other countries.
  • on mobile phones implementing the GSM standard, where it redirects to the country-specific emergency number.

In other fields[edit]

One hundred [and] twelve is also:

  • 112 is the number of pounds in a British long hundredweight.[3]
  • The section of the Thai criminal code dealing with lèse majesté, often used as a shorthand for matters concerning opposition to the Thai monarchy.
  • The number of surat al-Ikhlas in the Qur'an

See also[edit]

References[edit]

  1. ^ "Sloane's A000566 : Heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
  2. ^ "Sloane's A005349 : Niven (or Harshad) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
  3. ^ Paul Pasles, Benjamin Franklin's numbers: an unsung mathematical odyssey. Princeton: Princeton University Press (2008): 37