14547
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 20944
- Proper Divisor Sum (Aliquot Sum)
- 6397
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8928
- Möbius Function
- -1
- Radical
- 14547
- 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
- 133
- 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
- Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n-4)/2.at n=20A048062
- Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n+3)/3.at n=20A048084
- Numbers k such that 216*k+108 is a term of A097703 and A007494 and A098240.at n=14A098241
- Number of partitions of n into parts with at most one 1 and at most one 2.at n=45A121081
- Number of n X 3 0..1 arrays with rows and columns unimodal.at n=6A223615
- Number of nX7 0..1 arrays with rows and columns unimodal.at n=2A223619
- T(n,k) = Number of n X k 0..1 arrays with rows and columns unimodal.at n=38A223620
- T(n,k) = Number of n X k 0..1 arrays with rows and columns unimodal.at n=42A223620
- Volume of elliptic cone (rounded down) with semi-minor axis = height = n and semi-major axis = 3*n/2.at n=20A228391
- Array read by upwards antidiagonals: A(n, k) = index of prime(k)^n in A098550.at n=31A253609
- Solution of the complementary equation a(n) = 2*a(n-1) - a(n-3) + b(n-1), where a(0) = 2, a(1) = 4, a(2) = 6, b(0) = 1, b(1) = 3, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=15A295615
- Numbers n such that there are precisely 5 groups of orders n and n + 1.at n=38A295991
- Lengths of largest face diagonal in primitive Euler bricks or Pythagorean cuboids: possible values of max(d, e, f) for solutions to a^2 + b^2 = d^2, a^2 + c^2 = e^2, b^2 + c^2 = f^2 in coprime positive integers a, b, c, d, e, f.at n=21A306120
- Numbers k for which rank of the elliptic curve y^2=x^3-k*x is 4.at n=9A309034
- a(0)=1; a(1)=1; for n >= 2, a(n) = a(n-1) + a(n-A000005(n)).at n=27A320357
- Number of parts in all partitions of n in which no part occurs more than ten times.at n=24A320613
- The successive approximations up to 2^n for the 2-adic integer 3^(1/5).at n=14A325892