14715
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
- 16
- Divisor Sum
- 26400
- Proper Divisor Sum (Aliquot Sum)
- 11685
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7776
- Möbius Function
- 0
- Radical
- 1635
- Omega Function (Ω)
- 5
- 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
- 120
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers k such that phi(k) is a perfect 5th power.at n=39A078165
- Number of (n+1)X(n+1) 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.at n=2A205729
- Number of (n+1)X4 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.at n=2A205731
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.at n=12A205736
- Number of 4X(n+1) 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.at n=2A205739
- Deficient numbers n having a companion m > n such that sigma(n)/n = sigma(m)/m.at n=26A212608
- Values of x such that x^2 + y^2 = 53^n with x and y coprime and 0 < x < y.at n=5A230759
- Number of partitions of n such that 2*(least part) < greatest part.at n=34A237820
- Number of partitions of n such that (greatest part) > (multiplicity of least part).at n=36A240184
- Sum over the genera g of the number of immersions of an unoriented circle with n crossings in an unoriented surface of genus g.at n=5A260912
- G.f.: 1 / Product_{n>=0} (1 - x^(n+5))^((n+1)*(n+2)*(n+3)*(n+4)/4!).at n=18A264925
- Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + n -1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=16A293351
- Numbers k such that k and k+1 are both hoax numbers (A019506).at n=26A329935
- Number of nontrivial equivalence classes of S_n under the {1234,3412} pattern-replacement equivalence.at n=39A330395
- Numbers k such that A307437(k) is divisible by 3.at n=23A342037
- a(n) = Sum_{i=1..n} (prime(i+1)-prime(i))*prime(n+1-i).at n=43A343531
- Number of edges in an equilateral triangle when n internal equilateral triangles are drawn between the 3n points that divide each side into n+1 equal parts.at n=50A357008
- Triangle read by rows: T(n,k) is the number of unlabeled connected weakly graded (ranked) posets with n elements and rank k.at n=50A361954
- G.f. A(x) satisfies A(x) = (1 + x*A(x))^4 * C(x), where C(x) is the g.f. of A000108.at n=5A381861