| ||||
|---|---|---|---|---|
| Cardinal | seventy-four | |||
| Ordinal | 74th (seventy-fourth) | |||
| Factorization | 2 × 37 | |||
| Divisors | 1, 2, 37, 74 | |||
| Greek numeral | ΟΔ´ | |||
| Roman numeral | LXXIV | |||
| Binary | 10010102 | |||
| Ternary | 22023 | |||
| Senary | 2026 | |||
| Octal | 1128 | |||
| Duodecimal | 6212 | |||
| Hexadecimal | 4A16 | |||
74 (seventy-four) is the natural number following 73 and preceding 75.
In mathematics[edit]
74 is:
- the twenty-first distinct semiprime[1] and the eleventh of the form (2.q), where q is a higher prime.
- with an aliquot sum of 40, within an aliquot sequence of three composite numbers (74,40,50,43,1,0) to the Prime in the 43-aliquot tree.
- a palindromic number in bases 6 (2026) and 36 (2236).
- a nontotient.[2]
- the number of collections of subsets of {1, 2, 3} that are closed under union and intersection.[3]
- φ(74) = φ(σ(74)).[4]
There are 74 different non-Hamiltonian polyhedra with a minimum number of vertices.[5]
In science[edit]
- The atomic number of tungsten
In astronomy[edit]
- Messier object M74, a magnitude 10.5 spiral galaxy in the constellation Pisces.
- The New General Catalogue object NGC 74, a galaxy in the constellation Andromeda.
In music[edit]
- Seventy-four, one of the Number Pieces by John Cage
- "Seventy-Four", a song by the American band Bright from the album The Albatross Guest House
In other fields[edit]
Seventy-four is also:
- The year AD 74, 74 BC, or 1974
- Designates the 7400 series of Integrated Chips. 74xx xx=00-4538
- A seventy-four was a third-rate warship with 74 guns.
- The registry of the U.S. Navy's nuclear aircraft carrier USS John C. Stennis (CVN-74), named after U.S. Senator John C. Stennis
- A hurricane or typhoon is a system with sustained winds of at least 74 mph (64 knots).
- The number of the French department Haute-Savoie
- In the Bible it is the number of people that were in the presence of God on Mount Sinai and saw God without dying "Exodus 24:9-11"
References[edit]
- ^ Sloane, N. J. A. (ed.). "Sequence A001358". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A005277 : Nontotients". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-29.
- ^ Sloane, N. J. A. (ed.). "Sequence A306445 (Number of collections of subsets of {1, 2, ..., n} that are closed under union and intersection)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-05-22.
- ^ Sloane, N. J. A. (ed.). "Sequence A006872". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ "Sloane's A007033: Non-Hamiltonian polyhedra with n nodes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2020-12-11.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction