178 (number)

← 177 178 179 →
← 170 171 172 173 174 175 176 177 178 179 → List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred seventy-eight
Ordinal	178th (one hundred and seventy-eighth)
Factorization	2 × 89
Divisors	1, 2, 89, 178
Roman numeral	CLXXVIII
Binary	101100102
Ternary	201213
Quaternary	23024
Quinary	12035
Senary	4546
Octal	2628
Duodecimal	12A12
Hexadecimal	B216
Vigesimal	8I20
Base 36	4Y36

178 (one hundred [and] seventy-eight) is the natural number following 177 and preceding 179.

In mathematics

• 178 is a deficient number, as 92 is less than 178
• 178 is a semiprime, a product of two primes, namely 2 and 89
• 178 is a square-free number
• 178 is the sum of 2 square numbers: (13)² + (3)²
• 178 is a 31-gonal number
• 178 is a digitally balanced number, as its binary number (10110010) has an equal number of zeros and ones
• 178 is palindromic in 3 consecutive bases = 454₆ = 343₇ = 262₈

In astronomy

• 178 Belisana is a rocky main belt asteroid
• 178P/Hug-Bell is a periodic comet in our solar system
• Arp 178 is a triplet of galaxies, in the constellation Boötes: NGC 56, NGC 5614, and NGC 5615

In computing

• DO-178B, Software Considerations in Airborne Systems and Equipment Certification is a guidance for software development
• INTEGRITY-178B is a royal-free ARINC 653–compliant real-time operating system

In the military

• 178th Battalion, CEF unit in the Canadian Expeditionary Force during World War I
• 178th Airlift Squadron unit of the North Dakota Air National Guard
• Blohm & Voss P.178 was an experimental jet-powered dive bomber during World War II
• Panhard 178 was an advanced French reconnaissance 4x4 armoured car during World War II
• USNS Flyer (T-AG-178) was a U.S. Navy miscellaneous auxiliary, bathymetric Survey Ship during World War II
• USNS Frederick Funston (T-AP-178) was a U.S. Navy Frederick Funston-class attack transport ship during World War II
• USS Fairfield (AK-178) was a U.S. Navy Alamosa-class cargo ship during World War II
• USS Herzog (DE-178) was a U.S. Navy Cannon class destroyer escort during World War II
• USS Hogan (DD-178) was a U.S. Navy Wickes class destroyer during World War II
• USS Lander (APA-178) was a Haskell-class attack transport during World War II
• USS Permit (SS-178) was a U.S. Navy Porpoise-class submarine during World War II
• USS Tunica (ATA-178) was a U.S. Navy Sotoyomo-class auxiliary fleet tugboat during World War II

In transportation

• Heinkel He 178 was the world's first aircraft to fly under turbojet power
• 178th-179th Street Tunnels are defunct vehicular tunnels in Upper Manhattan
• List of highways numbered 178

In other fields

178 is also:

• The year AD 178 or 178 BC
• 178 AH is a year in the Islamic calendar corresponds to 794 – 795 CE
• The atomic number of an element temporarily called Unseptoctium
• Minuscule 178 is a Greek minuscule manuscript of the New Testament

See also

• United Nations Security Council Resolution 178
• United States Supreme Court cases, Volume 178
• Takao Ozawa v. United States, 260 U.S. 178 (1922)
• Pennsylvania House of Representatives, District 178

External links

• Number Facts and Trivia: 178
• The Number 178
• The Positive Integer 178
• Number Gossip: 178