16106
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 24162
- Proper Divisor Sum (Aliquot Sum)
- 8056
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8052
- Möbius Function
- 1
- Radical
- 16106
- Omega Function (Ω)
- 2
- 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
- yes
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 41.at n=31A020380
- a(n) = s(n+3)/5, where s is A024951.at n=12A024952
- Numbers whose set of base-11 digits is {1,2}.at n=31A032931
- a(n) = A047848(8, n).at n=5A047856
- Row sums of triangle A105542, which equals the matrix square of triangle A105540.at n=11A105544
- a(k) such that A225258 column k of T(n,k) = n*k^3 - a(k) for large n.at n=33A225263
- Expansion of 1/((1-x)^4*(1-6x)).at n=5A229702
- a(n) = 126*2^n - 22 (n>=1).at n=6A304389
- Numerator of (1+sigma(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)^2 = A003961(n^2)).at n=48A337338
- Number of cyclic subgroups of the group (C_n)^5, where C_n is the cyclic group of order n.at n=10A344219
- a(n) = Sum_{k=1..n} k * rad(k).at n=39A350996
- a(n) = Sum_{k=1..n} binomial(k+2,3) * n^(n-k).at n=6A368535