11822
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 18576
- Proper Divisor Sum (Aliquot Sum)
- 6754
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5632
- Möbius Function
- -1
- Radical
- 11822
- 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
- 143
- 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
- Number of partitions into non-integral powers.at n=9A000397
- Self-convolution of Fibonacci numbers.at n=17A001629
- Least k such that first k terms of A022300 contain n more 2's than 1's.at n=13A025515
- Number of binary rooted trees with n nodes and height at most 8.at n=16A036591
- Bisection of Fibonacci triangle A037027: odd-indexed members of column sequences of A037027 (not counting leading zeros).at n=37A060921
- Integer part of log(n)^sqrt(n).at n=47A062463
- Total number of line segments between points visible to each other in a square n X n lattice.at n=13A141255
- Eight bishops and one elephant on a 3 X 3 chessboard: a(n) = 3*2^n - 2*F(n+1), with F(n) = A000045(n).at n=12A175657
- The number of unlabeled graphs on n nodes with degree of 1 or 2.at n=29A186417
- Number of partitions p of n such that the number of parts having multiplicity 1 is not a part and max(p) - min(p) is a part.at n=49A241448
- Permutation of natural numbers: a(n) = A243285(A122111(2*n)).at n=40A244982
- Numbers n such that Bernoulli number B_{n} has denominator 282.at n=30A272184
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 590", based on the 5-celled von Neumann neighborhood.at n=33A273117
- Number of n X 2 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=8A281199
- T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=53A281205
- Number of extended polydrafters with n cells, identifying mirror images.at n=4A289137
- Sum of the third largest parts in the partitions of n into 6 parts.at n=40A308871
- Total number of distinct run lengths summed over all permutations of [n] with exactly k distinct lengths of increasing runs.at n=7A317328
- a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|)/8.at n=27A331773
- Bisection of main diagonal of A115009.at n=6A358297