3316
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 5810
- Proper Divisor Sum (Aliquot Sum)
- 2494
- 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
- 1656
- Möbius Function
- 0
- Radical
- 1658
- 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
- 92
- 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
- From rook polynomials.at n=8A001925
- Number of unlabeled trivalent 3-connected bipartite planar graphs with 2n nodes without subgraphs R1 and R4.at n=22A007085
- Coordination sequence T5 for Zeolite Code DFO.at n=44A009879
- Numbers k such that the continued fraction for sqrt(k) has period 34.at n=41A020373
- a(n) = a(n-1) + a(n-2) + 1, with a(0) = 1 and a(1) = 12.at n=13A022326
- Numbers k such that Fibonacci(k) == 3 (mod k).at n=39A023175
- a(n) = 1*prime(n) + 2*prime(n-1) + ... + k*prime(n+1-k), where k=floor((n+1)/2) and prime(n) is the n-th prime.at n=21A023870
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (primes).at n=20A024867
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 28.at n=42A031526
- Multiplicity of highest weight (or singular) vectors associated with character chi_143 of Monster module.at n=36A034531
- Triangle of coefficients of generating function of 5-ary rooted trees of height at most n.at n=58A036607
- Number of 5-ary rooted trees with n nodes and height at most 4.at n=16A036615
- Number of n-node rooted labeled trees with deg <= 4 at root and outdegree <= 2 elsewhere.at n=12A036661
- Numbers having three 4's in base 9.at n=23A043471
- Numbers whose base-5 representation has exactly 6 runs.at n=25A043606
- Numbers k such that the string 1,6 occurs in the base 10 representation of k but not of k-1.at n=37A044348
- Numbers n such that string 1,6 occurs in the base 10 representation of n but not of n+1.at n=37A044729
- Numbers k such that k*2^m+1 is prime for exactly one exponent m in the range 0<=m<=k.at n=29A061155
- Interprimes which are of the form s*prime, s=4.at n=15A075279
- Numbers k such that phi(k-1) < phi(k) < phi(k+1), where phi is the Euler totient function (A000010).at n=26A078776