11452
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 22960
- Proper Divisor Sum (Aliquot Sum)
- 11508
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 4896
- Möbius Function
- 0
- Radical
- 5726
- 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
- 81
- 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
- Sum of spans of 2n-step polygons on square lattice.at n=7A006772
- Numbers k such that A049614(k) - A000040(k) is prime.at n=16A078745
- Multiples of 14 containing a 14 in their decimal representation.at n=36A121034
- Row sums of triangle A141210.at n=10A141211
- Triangle read by rows: T(n,k) is the number of ordered trees with n edges and having k vertices of outdegree 2 that have (two) leaves as their (two) children.at n=44A178519
- Triangle T(n,k), read by rows, given by (1,0,2,1,3,2,4,3,5,4,6,5,7,6,8,7,9,8,...) DELTA (0,1,0,1,0,1,0,1,0,1,0,1,0,1,...) where DELTA is the operator defined in A084938.at n=50A200545
- Number of n X 7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=3A207168
- T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=48A207169
- Number of 4 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=6A207172
- Number of partitions p of n such that (number of numbers of the form 3k in p) is a part of p.at n=36A241546
- Nonprimes such that it takes exactly 3 iterations of reverse-and-add digits to generate a prime.at n=29A245208
- Triangle read by rows, T(n,k) = 2^k*GegenbauerC(k,-n,-1/4), for n>=0 and 0<=k<=n.at n=42A272868
- Number of 6-cycles in the n X n knight graph.at n=12A289181
- Triangle read by rows: T(n,k) = number of colored weighted Motzkin paths ending at (n,k).at n=38A293171
- Sum of the fourth largest parts in the partitions of n into 8 parts.at n=39A308995
- Triangle read by rows: coefficients of the polynomials given by KummerU(-n, 1 - n - x, 3).at n=41A327997
- a(n) = Sum_{k=1..n} k^2 * floor(n/k)^3.at n=15A350124
- Lexicographically earliest sequence of distinct numbers such that every sum of consecutive terms is an evil number (A001969).at n=29A357989