13334
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 20520
- Proper Divisor Sum (Aliquot Sum)
- 7186
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6496
- Möbius Function
- -1
- Radical
- 13334
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 182
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = (7*n+1)*(7*n+6).at n=16A001526
- Number of Fibonacci numbers F(k), k <= 10^n, which end in 1.at n=4A073550
- Number of Fibonacci numbers F(k), k <= 10^n, which end in 5.at n=4A073553
- Number of Fibonacci numbers F(k), k <= 10^n, which end in 7.at n=4A073554
- a(n) = smallest multiple of prime(n) such that a(n) +1 is a multiple of prime(n+1).at n=29A077338
- Cardinality of set of sets of parts of all partitions of n.at n=45A088314
- a(n) = (n/2) * Sum_{k=0..n} binomial(n,k)/gcd(n,k).at n=11A105861
- Sums of two successive primes s such that s+-3 are primes.at n=26A179485
- Number of (w,x,y,z) with all terms in {1,...,n} and w*x+y*z>=n^2.at n=19A212132
- Triangle read by rows: distribution of adjacent transpositions in involutions.at n=37A217876
- Number of n X 4 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=12A224142
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 427", based on the 5-celled von Neumann neighborhood.at n=25A271904
- Total sum of prime parts in all compositions of n.at n=12A309561
- Right-truncatable happy numbers: every prefix is a happy number and no digits are zero.at n=22A383638