1132
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1988
- Proper Divisor Sum (Aliquot Sum)
- 856
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 564
- Möbius Function
- 0
- Radical
- 566
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 62
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of 3-valent trees (= boron trees or binary trees) with n nodes.at n=15A000672
- A Fielder sequence.at n=12A001640
- Primes multiplied by 4.at n=60A001749
- a(n) = least value of m for which Liouville's function A002819(m) = -n.at n=42A002053
- Number of solutions to a linear inequality.at n=30A002797
- Numbers that are the sum of 9 positive 5th powers.at n=43A003354
- Primes written in base 5.at n=38A004679
- a(n) = floor(n*phi^7), where phi is the golden ratio, A001622.at n=39A004922
- a(n) = round(n*phi^7), where phi is the golden ratio, A001622.at n=39A004942
- Van der Waerden numbers W(2,n).at n=5A005346
- Expansion of 1 / Product_{k>=1} (1-x^k)^(k+1).at n=9A005380
- Number of paraffins.at n=13A006001
- Number of graphs with n nodes, n edges and no isolated vertices.at n=10A006649
- Series for second perpendicular moment of square lattice.at n=8A006734
- Numbers that contain only 1's, 2's and 3's.at n=46A007932
- Coordination sequence T1 for Zeolite Code DDR.at n=21A008071
- Coordination sequence T5 for Zeolite Code DDR.at n=21A008075
- Coordination sequence T5 for Zeolite Code GOO.at n=23A008115
- Coordination sequence T4 for Zeolite Code SGT.at n=21A008232
- a(n+1) = a(n)-b(n+1) if a(n) >= b(n+1) else a(n)+b(n+1), where {b(n)} are the triangular numbers A000217.at n=47A008345