14187
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 18920
- Proper Divisor Sum (Aliquot Sum)
- 4733
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9456
- Möbius Function
- 1
- Radical
- 14187
- Omega Function (Ω)
- 2
- 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
- 102
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- Continued cotangent for log(2).at n=4A081785
- Number of 2-sided strip polykites with n cells.at n=13A151530
- Augmentation of the triangle A193596. See Comments.at n=42A193597
- Numerators of increasingly better rational approximations to log(3)/log(2) with increasing denominators.at n=15A254351
- Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 710", based on the 5-celled von Neumann neighborhood.at n=13A283702
- Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 718", based on the 5-celled von Neumann neighborhood.at n=13A283706
- Number of nX4 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=5A295093
- Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=3A295095
- T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=39A295097
- T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 3 1s.at n=41A295097
- Number of integer partitions of n with at least two adjacent parts of quotient 2.at n=37A350846
- G.f. A(x) satisfies: A(x) = x * exp( A(x)^2/x + A(-x^2)^2/(2*x^2) + A(x^3)^2/(3*x^3) + A(-x^4)^2/(4*x^4) + ... ).at n=8A363294
- Triangle read by rows: T(n,k) is the number of graceful Prüfer codes on n vertices whose last element equals k (0 <= k <= n-1).at n=42A392515