5786
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9504
- Proper Divisor Sum (Aliquot Sum)
- 3718
- 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
- 2620
- Möbius Function
- -1
- Radical
- 5786
- Omega Function (Ω)
- 3
- 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
- 49
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Expansion of 1/((1+x)*(1-x)^5).at n=20A001752
- a(n) = n*(n + 1)*(2*n^2 + 2*n - 1)/6.at n=10A006324
- Coordination sequence for MgNi2, Position Ni3.at n=19A009934
- Expansion of 1/(1-x^6-x^7-x^8-x^9-x^10-x^11).at n=49A017851
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VSV = VPI-7 Na26H6[Zn16Si56O144].44H2O starting from a T1 atom.at n=12A019260
- a(n) = Sum_{k=1..n} (n-k) * floor(n/k).at n=42A024920
- Numbers whose base-4 representation contains exactly three 1's and four 2's.at n=2A045104
- Expansion of (1-x)*(1+x)/(1-2*x-x^2+x^3).at n=11A052534
- a(n) = floor(Pi^n/n^Pi).at n=14A062719
- Numbers which need 12 'Reverse and Add' steps to reach a palindrome.at n=41A065217
- Numbers n such that (n + prime(n)), (n+1 + prime(n+1)) and (n+2 + prime(n+2)) are divisible by 5.at n=37A107581
- a(n) = 2a(n-1) + a(n-2) - a(n-3); a(0)=4, a(1)=9, a(2)=20.at n=9A109110
- Row sums of correlation triangle for floor((n+4)/4).at n=40A115269
- Fifth column (m=4) of triangle A128494.at n=41A128499
- Fifth column (m=4) of triangle A128494.at n=40A128499
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.at n=11A148007
- Integers of the form m*(6*m -+ 1)/2.at n=42A154292
- Integer averages of the set of the first positive squares up to some n^2.at n=43A164576
- Indices of pentagonal pyramidal numbers which are the sum of two other such numbers: k such that A002411(k) = A002411(i)+A002411(j) for some i,j>0.at n=17A172437
- Wiener index of the Moebius ladder M(n).at n=21A180857