11754
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 25506
- Proper Divisor Sum (Aliquot Sum)
- 13752
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3912
- Möbius Function
- 0
- Radical
- 3918
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 50
- 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
- Numbers k such that sum of divisors of k^2 is a square.at n=6A008847
- Coordination sequence for MgCu2, Cu position.at n=27A009930
- "CFK" (necklace, size, unlabeled) transform of 1,2,3,4...at n=16A032141
- Sequence (a(n): n >= 1) that shifts left 2 places under the "CIK" (necklace, indistinct, unlabeled) transform and satisfies a(1) = a(2) = 1.at n=15A032202
- a(n) = floor((5/4)^n).at n=42A065565
- Number of binary strings of length n with no substrings equal to 0010 0101 or 1011.at n=13A164495
- Number of n-digit terms in A115853.at n=5A171738
- Number of n X n symmetric binary matrices with each 1 adjacent to exactly 1 horizontally, vertically or diagonally neighboring 1.at n=6A191343
- Principal diagonal of the convolution array A213564.at n=7A213565
- Expansion of series reversion of x*(1 - x^3*Sum_{k>=1} x^k).at n=19A215342
- The number of integer partitions P of n such that either the length k of P is not a part or P has at least one part equal to 1 (or both).at n=34A229863
- Least number k such that k^n + n and k^n - n are both prime, or 0 if no such number exists.at n=24A239475
- Number of n X 3 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=18A240790
- Expansion of e.g.f. 1/(1 - x)^(x/(1 - x)^2).at n=6A300910
- a(n) = 9*n^2 + 21*n - 6 (n>=1).at n=34A304374
- Number of factorizations of 2^n into factors > 1 with even integer average.at n=46A326671