14997
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 30
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 20000
- Proper Divisor Sum (Aliquot Sum)
- 5003
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9996
- Möbius Function
- 1
- Radical
- 14997
- 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
- 177
- 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
- no
- Odd
- yes
Appears in sequences
- Number of achiral planar maps with n edges.at n=8A006443
- Pisot sequence E(9,19), a(n)=[ a(n-1)^2/a(n-2)+1/2 ].at n=10A014005
- Lucky numbers with size of gaps equal to 20 (upper terms).at n=31A031903
- Numerators of continued fraction convergents to sqrt(459).at n=5A041874
- Duplicate of A006443.at n=7A054936
- Number of unimodal partitions/compositions of n into distinct terms.at n=38A072706
- a(n) = smallest k such that 4k has a digit sum = n.at n=38A077490
- Number of squares on infinite chessboard that a knight can reach in n moves from a fixed square.at n=46A118312
- Composite numbers, not ending with 0, sharing a 3-digit sequence with some of its prime factors.at n=12A131523
- Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 10000-11111-10000 pattern in any orientation.at n=19A147079
- Number of zero-sum -n..n arrays of 4 elements with first and second differences also in -n..n.at n=23A201875
- Numbers that match polynomials over {0,1} that have a factor containing -3 as a coefficient; see Comments.at n=18A208182
- Number of subsets of {1,...,n} containing n and having at least one set partition into 4 blocks with equal element sum.at n=11A248113
- Number of length n+4 0..2 arrays with at most one downstep in every n consecutive neighbor pairs.at n=9A255111
- Partial sums of A299037.at n=47A299767
- Numbers k such that 341*2^k+1 is prime.at n=21A322963
- Number of colored integer partitions of n such that two colors are used and parts differ by size or by color.at n=28A327380
- Triangle read by rows: T(n,k) is the number of connected graphs with n nodes and degeneracy k, 0 <= k < n.at n=51A352067
- Numbers k such that k, k + 1, k + 2, and k + 4 are all semiprimes.at n=44A368670
- Triangle read by rows: T(n,k) is the number of achiral combinatorial maps with n edges and genus k, 0 <= k <= floor(n/2).at n=20A380234