17109
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
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 24726
- Proper Divisor Sum (Aliquot Sum)
- 7617
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 11400
- Möbius Function
- 0
- Radical
- 5703
- 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
- 27
- 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
- Structured pentagonal hexacontahedral numbers (vertex structure 16).at n=8A100169
- a(n) = a(n-1) + 2*n^2 with a(1) = 1.at n=28A112524
- The Wiener index of a benzenoid consisting of a linear chain of n hexagons.at n=13A143938
- Number of squares of all sizes in 3*n*(n+1)/2-ominoes in form of three-quarters of Aztec diamonds.at n=34A258440
- Growth series for affine Coxeter group (or affine Weyl group) D_12.at n=6A266767
- Growth series for affine Coxeter group B_12.at n=6A267175
- Expansion of 1/((1-x)*(1-2*x^2)*(1-3*x^3)*(1-4*x^4)).at n=18A291987
- a(n) = (4*n^3 + 30*n^2 + 50*n)/3 + 1.at n=21A323218
- a(n) = Sum_{d|n} 2^(d-1) * d^(n/d-1).at n=14A359811