3708
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 18
- Divisor Sum
- 9464
- Proper Divisor Sum (Aliquot Sum)
- 5756
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1224
- Möbius Function
- 0
- Radical
- 618
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 3
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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 118
- 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
- Second-order Eulerian numbers <<n+1,n-1>>.at n=4A002538
- Number of permutations of length n with two 3-sequences.at n=8A002630
- Coordination sequence T4 for Zeolite Code MFS.at n=38A008176
- Coordination sequence T3 for Zeolite Code MOR.at n=39A008184
- Coordination sequence T3 for Zeolite Code MTN.at n=37A008188
- Second-order Eulerian triangle T(n,k), 1 <= k <= n.at n=19A008517
- Coordination sequence T1 for Zeolite Code -WEN.at n=44A009862
- Coordination sequence T2 for Zeolite Code RUT.at n=40A009898
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DOH = Dodecasil 1H [Si34O68].qR starting with a T1 atom.at n=11A019113
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEL = ZSM-11 Nan[AlnSi96-nO192] starting with a T1 atom.at n=11A019148
- Coordination sequence T2 for Zeolite Code IFR.at n=43A024983
- 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 30.at n=35A031528
- Coordination sequence for lattice D*_6 (with edges defined by l_1 norm = 1).at n=5A035472
- Numerators of continued fraction convergents to sqrt(493).at n=4A041940
- Erroneous version of A002538.at n=4A047867
- Triangle of numbers a(n,k) = number of permutations on n letters containing k 3-sequences (n >= 0, 0<=k<=max(0,n-2)).at n=32A047921
- Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2); sequence gives values of u2.at n=13A048190
- e-perfect numbers: numbers k such that the sum of the e-divisors (exponential divisors) of k equals 2*k.at n=34A054979
- Sum of composite numbers up to n is palindromic.at n=8A057959
- McKay-Thompson series of class 47A for the Monster group.at n=47A058690