189 (number)
This article may contain indiscriminate, excessive, or irrelevant examples. (April 2010) |
| ||||
---|---|---|---|---|
List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 → | ||||
Cardinal | one hundred eighty-nine | |||
Ordinal | 189th (one hundred eighty-ninth) | |||
Factorization | 33 × 7 | |||
Greek numeral | ΡΠΘ´ | |||
Roman numeral | CLXXXIX | |||
Binary | 101111012 | |||
Ternary | 210003 | |||
Octal | 2758 | |||
Duodecimal | 13912 | |||
Hexadecimal | BD16 |
189 (one hundred [and] eighty-nine) is the natural number following 188 and preceding 190.
In mathematics[]
189 is:
- an odd number
- a centered cube number[1]
- a composite number
- a deficient number, as 131 is less than 189
- a heptagonal number[2]
- a lucky number
- an Ulam number
- a 64-gonal number
- a Kaprekar constant in base 2
- palindromic in bases 2 (101111012), 20 (9920), 26 (7726) and 62 (3362).
- a Harshad number in bases 3, 4, 5, 6, 7, 11, 13, 15 (and 28 other bases).
- the sum of the sums of the divisors of the first 15 positive integers.[3]
Also:
- 189 can be written as sum of two cubes in two ways: 43 + 53 and 63 + (-3)3 (The smallest number that can be written as the sum of 2 positive only cubes in two ways is 1729)
- Divisors of 189: 1, 3, 7, 9, 21, 27, 63, 189
In astronomy[]
- 189 Phthia is a bright rocky main belt asteroid
- NGC 189 is an open cluster in the Cassiopeia constellation
In geography[]
- Lumsden No. 189, Saskatchewan in southwestern Saskatchewan, Canada
In the military[]
- 189th Airlift Squadron is a unit of the Idaho Air National Guard
- 189th Airlift Wing airlift unit, part of the Arkansas National Guard at Little Rock Air Force Base, Arkansas
- 189th Infantry Brigade, an infantry brigade of the United States Army based at Fort Bragg
- HMAS Pirie (J189) was a Royal Australian Navy Bathurst-class corvettes during World War II
- USS LSM(R)-189 was a United States Navy landing ship medium during World War II
- No. 189 Squadron RAF was a Royal Air Force squadron during World War I
- USNS John Lenthall (T-AO-189) is a United States Navy Henry J. Kaiser-class replenishment oiler
- USNS Lt. Raymond O. Beaudoin (T-AP-189) was a United States Navy troop transport during the Korean War
- USS Bronstein (DE-189) was a United States Navy Cannon-class destroyer escort during World War II
- USS Hidalgo (AK-189) was a United States Navy Alamosa-class cargo ship during World War II
- USS Oxford (APA-189) was a United States Navy Haskell-class attack transport during World War II
- USS Saury (SS-189) was a United States Navy Sargo-class submarine during World War II
- USS Semmes (DD-189) was a United States Navy Clemson-class destroyer during World War II
In music[]
- The song "What a Beautiful Day" (2003) by Chris Cagle includes the lyrics, "Day 189. Oh, I almost lost that girl to my foolish pride"
In transportation[]
- London Buses route 189
- Air Canada Flight 189 flight from Ottawa to Vancouver crashed on takeoff on June 26, 1978
- USA-189, an experimental satellite launched June 21, 2006
- DB AG electric locomotive class 189, a Siemens EuroSprinter ES64F4
In other fields[]
189 is also:
- The year AD 189 or 189 BC
- The atomic number of an element temporarily called Unoctennium
- Minuscule 189 is a Greek minuscule manuscript of the New Testament, on parchment
See also[]
- List of highways numbered 189
- United Nations Security Council Resolution 189
- United States Supreme Court cases, Volume 189
- Pennsylvania House of Representatives, District 189
External links[]
Wikimedia Commons has media related to 189 (number). |
- Number Facts and Trivia: 189
- Prime curiosities: 189
- The Number 189
- Number Gossip: 189
- VirtueScience: 189
References[]
- ^ "Sloane's A005898 : Centered cube numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ "Sloane's A000566 : Heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ Sloane, N. J. A. (ed.). "Sequence A024916 (sum_{k=1..n} sigma(k) where sigma(n) = sum of divisors of n)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
Categories:
- Integers