14876
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 26040
- Proper Divisor Sum (Aliquot Sum)
- 11164
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7436
- Möbius Function
- 0
- Radical
- 7438
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
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
- 45
- 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
- Expansion of 1/(1-x^2-x^3-x^4-x^5-x^6-x^7-x^8).at n=23A013985
- First differences are A005563.at n=34A047732
- Numbers k such that k^14 == 1 (mod 15^3).at n=17A056087
- Numbers k that, when expressed in base 6 and then interpreted in base 7, give a multiple of k.at n=11A062934
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is an obtuse isosceles integer triangle with prime side lengths.at n=23A070135
- a(n) = a(n-2) + A000265(a(n-1)), a(0)=0, a(1)=1.at n=31A114990
- First differences (A131771) equal this sequence with terms repeated at positions: {m*(m+1)/2, m>=0}.at n=25A131770
- First differences (A131772) equal this sequence with zeros inserted at positions {m*(m+1)/2, m>=0}.at n=31A131771
- Partial sums (A131771) equal this sequence excluding zeros located at positions {m*(m+1)/2, m>=0}, with a(0)=1.at n=38A131772
- Fundamental discriminants of real quadratic number fields with class number 9.at n=14A218159
- Number of composites removed in each step of the Sieve of Eratosthenes for 10^7.at n=22A227155
- The 180-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=35A244806
- Number of binary strings of length n+6 such that the smallest number whose binary representation is not visible in the string is 6.at n=15A261442
- a(n) = 25*n*(n + 1)/2 + 1.at n=34A262221
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 403", based on the 5-celled von Neumann neighborhood.at n=28A271809
- Largest finite number of distinct words arising in Watanabe's tag system {00, 1011} applied to a binary word w, over all starting words w of length n.at n=25A291067
- Expansion of Product_{k>=1} ((1 + x^(2*k-1)) / (1 - x^(2*k-1)))^(2*k-1).at n=17A292038
- Expansion of Product_{k>=1} (1 + x^prime(k))/(1 - x^prime(k)).at n=51A300413
- Triangle read by rows: T(n,k) = number of edges in a "frame" of size n X k (see Comments in A331457 for definition).at n=53A332600
- Numbers k such that k and k+1 have an equal sum of modified exponential divisors: A241405(k) = A241405(k+1).at n=20A379032