2366
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4392
- Proper Divisor Sum (Aliquot Sum)
- 2026
- 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
- 936
- Möbius Function
- 0
- Radical
- 182
- Omega Function (Ω)
- 4
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 89
- Smith Number
- yes
- 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 numbers == 0 (mod 3) in range 2^n to 2^(n+1) with odd number of 1's in binary expansion.at n=13A000773
- a(n) = sigma_2(n): sum of squares of divisors of n.at n=44A001157
- 4-dimensional pyramidal numbers: a(n) = n^2*(n^2-1)/12.at n=13A002415
- Quadrinomial coefficients: C(2+n,n) + C(3+n,n) + C(4+n,n).at n=12A005718
- Coefficients of modular function G_2(tau).at n=47A005760
- Expansion of (1+x^2) / ( (1-x)^2 * (1-x^3)^2 ).at n=37A006501
- 10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8*n - 5)/6.at n=12A007585
- Coordination sequence T3 for Zeolite Code DOH.at n=30A008080
- Coordination sequence T1 for Zeolite Code EMT.at n=40A008086
- Coordination sequence T9 for Zeolite Code MFI.at n=31A008172
- a(n) = floor(n/4)*floor((n+1)/4)*floor((n+2)/4).at n=54A008218
- Theta series of A_7 lattice.at n=4A008447
- Coordination sequence T5 for Zeolite Code RUT.at n=32A009901
- a(n) = n^2*(n+1).at n=13A011379
- a(n) = F(n) + L(n) + n, where F(n) (A000045) and L(n) (A000204) are Fibonacci and Lucas numbers respectively.at n=15A013915
- First differences of Shallit sequence S(3,7) (A020730).at n=8A014009
- Numerator of sum of -2nd powers of divisors of n.at n=44A017667
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PAR = Partheite Ca8[Al16Si16O60(OH)8].16H2O starting with a T2 atom.at n=5A019047
- Coordination sequence T4 for Zeolite Code SAO.at n=38A019574
- a(n) = 1*t(n) + 2*t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t(n)=2*n+1 (odd numbers).at n=22A023865