11596
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 21952
- Proper Divisor Sum (Aliquot Sum)
- 10356
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5328
- Möbius Function
- 0
- Radical
- 5798
- 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
- 143
- 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
- INVERTi transform of central trinomial coefficients (A002426).at n=13A007971
- Coordination sequence for alpha-Mn, Position Mn4.at n=28A009953
- a(n) = Sum_{j=0..n} T(n,j), T given by A026736.at n=13A026743
- [ exp(5/6)*n! ].at n=6A030968
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 60 ones.at n=26A031828
- Number of 6-ary rooted trees with n nodes and height at most 4.at n=18A036621
- Numbers k that divide s(k-1), where s(1) = 1, s(k) = s(k-1) + (k+1)*3^k.at n=8A057159
- Sum of the quadratic residues of prime(n).at n=47A076409
- Expansion of 1 - x - sqrt(1 - 2*x - 3*x^2) in powers of x.at n=13A126068
- Elias omega coded prime numbers represented in decimal.at n=22A147764
- Expansion of 2 - x - sqrt(1-2x-3x^2).at n=13A168055
- Sum of divisors of n and product of divisors of n are both perfect cubes.at n=3A244428
- Numbers k for which 4^k - 27 is prime.at n=22A274519
- Sum of quadratic residues of (n-th prime == 3 mod 4).at n=25A282035
- Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic residues mod p.at n=12A282041
- Number T(n,k) of permutations p of [n] such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.at n=38A320582
- G.f.: Sum_{n>=0} (1+x + x^n)^n * x^n.at n=20A326269