178 (number)
178 (one hundred [and] seventy-eight) is the natural number following 177 and preceding 179.
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| Cardinal | one hundred seventy-eight | |||
| Ordinal | 178th (one hundred seventy-eighth) | |||
| Factorization | 2 × 89 | |||
| Divisors | 1, 2, 89, 178 | |||
| Greek numeral | ΡΟΗ´ | |||
| Roman numeral | CLXXVIII | |||
| Binary | 101100102 | |||
| Ternary | 201213 | |||
| Octal | 2628 | |||
| Duodecimal | 12A12 | |||
| Hexadecimal | B216 | |||
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 the Solar System
- Arp 178 is a triplet of galaxies, in the constellation Boötes: NGC 5613, 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 4×4 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 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 U.S. Navy 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 178 AD or 178 BC
- 178 AH is a year in the Islamic calendar corresponds to 794 – 795 AD
- Minuscule 178 is a Greek minuscule manuscript of the New Testament
See also
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