11877
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 16416
- Proper Divisor Sum (Aliquot Sum)
- 4539
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7632
- Möbius Function
- -1
- Radical
- 11877
- 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
- no
- Odd
- yes
Appears in sequences
- a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=25A010009
- Quasi-Carmichael numbers to base -3: squarefree composites n such that for every prime p that divides n, p+3 divides n+3.at n=6A029563
- Non-balanced numbers in A015771.at n=21A078549
- a(n) = (4*n+3)*(4*n+7).at n=26A085027
- Integer part of Gauss's Arithmetic-Geometric Mean M(1,n^3).at n=45A127759
- Third trisection of A061037.at n=35A142600
- a(n) = (8*n+3)*(8*n+7).at n=13A146301
- a(n) = prime(n)^2-4.at n=28A166010
- Riordan array (f(x), x*f(x)) where f(x) is the g.f. of A059738.at n=50A171505
- Trisection A061037(3*n-2) of the Balmer spectrum numerators extended to negative indices.at n=37A174325
- a(0)=0, a(1)=1, a(n) = a(n-1) + (a(n-2) XOR n).at n=19A182537
- 1/4 the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.at n=1A210327
- 1/4 the number of (n+1)X3 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.at n=1A210329
- T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.at n=4A210335
- Number of (n+2)X5 0..2 matrices with each 3X3 subblock idempotent.at n=12A224601
- Number of partitions p = [x(1), ..., x(k)], where x(1) >= x(2) >= ... >= x(k), of n such that max(x(i) - x(i-1)) <= number of distinct parts of p.at n=37A241819
- Coordination sequence for (3,6,8) tiling of hyperbolic plane.at n=15A265077
- Number of integers in n-th generation of tree T(-3/2) defined in Comments.at n=25A274154
- Number of subsets of {1,..,n} of cardinality >= 2 such that the elements of each counted subset are pairwise coprime.at n=25A276187
- Least number x such that x^n has n digits equal to k. Case k = 6.at n=17A285453