112 (number)

Not to be confused with 112 (emergency telephone number).

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

← 111 112 113 →
← 110 111 112 113 114 115 116 117 118 119 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred twelve
Ordinal	112th (one hundred twelfth)
Factorization	24 × 7
Divisors	1, 2, 4, 7, 8, 14, 16, 28, 56, 112
Greek numeral	ΡΙΒ´
Roman numeral	CXII
Binary	11100002
Ternary	110113
Senary	3046
Octal	1608
Duodecimal	9412
Hexadecimal	7016

Mathematics

112 is an abundant number, a heptagonal number,^[1] and a Harshad number.^[2]

112 is the number of connected graphs on 6 unlabeled nodes.^[3]

If an equilateral triangle has sides of length 112, then it contains an interior point at integer distances 57, 65, and 73 from its vertices. This is the smallest possible side length of an equilateral triangle that contains a point at integer distances from the vertices.^[4]

Other fields

112 is also the atomic number of copernicium.

There are 112 cards in Uno Flip!

See also

• 112 (disambiguation)

References

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. "Sloane's A001349 : Number of connected graphs with n nodes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-12-19.
4. Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987), page 119