17436
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
- 12
- Divisor Sum
- 40712
- Proper Divisor Sum (Aliquot Sum)
- 23276
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5808
- Möbius Function
- 0
- Radical
- 8718
- Omega Function (Ω)
- 4
- 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
- 172
- 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
- Number of 3rd-order maximal independent sets in cycle graph.at n=45A007387
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 22.at n=11A031700
- Numbers whose set of base-11 digits is {1,2}.at n=38A032931
- Numbers k such that z(k) = j(k), where z(k) = sopf(k - d(k)), j(k) = d(sopf(k) + k), sopf(k) = A008472(k) and d(k) = A000005(k).at n=24A063961
- Sum of end-to-end Manhattan distances over all self-avoiding walks on cubic lattice trapped after n steps.at n=4A079158
- Indices of primes in A001644 (the Lucas 3-step numbers).at n=29A104576
- a(n)=a(n-2)+a(n-5).at n=45A133394
- Expansion of Product_{k > 0} (1 + f(k)*x^k), where f(n) = A147952(n).at n=31A147953
- a(n) = 484*n^2 + 2*n.at n=5A158325
- a(n) = 144*n^2 + 12.at n=11A158546
- a(n) = 121*n^2 + n.at n=11A173267
- Partial sums of A255745.at n=19A255766
- Number of strict compositions of n whose non-adjacent parts are strictly decreasing.at n=44A333150
- Number of integer partitions of n that are not pairwise coprime, where a singleton is not coprime unless it is (1).at n=36A335240