15471
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
- 2
Divisibility
- Divisor Count
- 10
- Divisor Sum
- 23232
- Proper Divisor Sum (Aliquot Sum)
- 7761
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10260
- Möbius Function
- 0
- Radical
- 573
- Omega Function (Ω)
- 5
- 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
- 89
- 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
- Number of partitions of n into parts not of the form 17k, 17k+7 or 17k-7. Also number of partitions with at most 6 parts of size 1 and differences between parts at distance 7 are greater than 1.at n=37A035968
- Lesser of two consecutive numbers each divisible by a fourth power.at n=29A068782
- The sum of a triangular array made from a negative 6 fold permutation product with shifts up and down of {2,6}.at n=43A105162
- Numbers k for which digitsum(k) + digitsum(k^2) + digitsum(k^3) = digitsum(k^4).at n=34A118470
- Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A115263 based on (1,2,3,4,...); by antidiagonals.at n=39A202673
- Numbers k such that k and k + 1 are both of the form p*q^4 where p and q are distinct primes.at n=3A215197
- a(n) = 2*n^4 - floor(2^(1/4)*n)^4.at n=18A257854
- Composites whose prime factorization in base 4 is an anagram of the number in base 4.at n=32A260048
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 413", based on the 5-celled von Neumann neighborhood.at n=28A272009
- Number of simple 4-edge-connected non-isomorphic n-vertex graphs.at n=8A324227
- Numbers k such that both k and k+1 are not exponentially squarefree numbers.at n=10A342188
- Numbers k such that k and k+1 both have the same number of squarefree divisors and powerful divisors.at n=6A360904
- Expansion of 1/(2 - 1/(1 - 9*x)^(2/3)).at n=4A373939
- Number of connected unlabeled graphs with n nodes and minimum vertex degree >= 4.at n=8A380127
- Expansion of 1/(1 - x*(1 + x)^2)^3.at n=9A382406