16136
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 30270
- Proper Divisor Sum (Aliquot Sum)
- 14134
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8064
- Möbius Function
- 0
- Radical
- 4034
- Omega Function (Ω)
- 4
- 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
- 71
- 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 rooted trees with n nodes and a single labeled node; pointed rooted trees; vertebrates.at n=11A000107
- Diagonally symmetric n-celled polyominoes with 1 hole.at n=14A057423
- Smallest number m such that n-th prime = A171135(m).at n=10A171137
- Partial sums of A079062.at n=34A177455
- Number of permutations of n avoiding the pattern 1231'.at n=8A177483
- Number of strings of numbers x(i=1..4) in 0..n with sum i*x(i) equal to n*4.at n=41A184704
- Triangle read by rows: numbers of nonintersecting circles with one of them marked.at n=55A280784
- Triangle read by rows: numbers of nonintersecting circles, one marked.at n=66A280785
- Triangle read by rows: numbers of nonintersecting circles, one marked.at n=67A280785
- Number of symmetric subsets of {1,..,2n} for which the reciprocal of the modular-part product is also a modular-part product.at n=12A329778
- Number of compositions (ordered partitions) of n into distinct parts, the least being 2.at n=34A339163
- Expansion of the o.g.f. (1 + 8*x + 10*x^2 + 8*x^3 + x^4)/((1 - x)^4*(1 + x)^2).at n=23A342362
- Numbers k for which phi(k) = phi(k''), where phi is the Euler totient function (A000010) and k'' the second arithmetic derivative of k (A068346).at n=34A352331