14428
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 25256
- Proper Divisor Sum (Aliquot Sum)
- 10828
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7212
- Möbius Function
- 0
- Radical
- 7214
- Omega Function (Ω)
- 3
- 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
- 45
- 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
- Fibonacci sequence beginning 1, 14.at n=16A022104
- Expansion of g.f. (1 - 4*x + 6*x^2 - 2*x^3)/((1-x)^3*(1-2*x)^2).at n=10A048503
- Numbers n such that binomial(2n, n) - 1 is prime.at n=40A066726
- Numbers n such that n*359# +-1 are twin primes, where 359# = 72nd primorial (A002110(72)).at n=15A087907
- Sieve performed by successive iterations of steps where step m is: keep m terms, remove the next 2 and repeat; as m = 1,2,3,.. the remaining terms form this sequence.at n=33A112560
- a(n) = n*F(n) + (n-1)*F(n-1).at n=14A136376
- Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 2.at n=31A209984
- Number of tilings of a 16 X n rectangle using 2n octominoes of shape I.at n=24A250665
- Number of tilings of a 24 X n rectangle using 3n octominoes of shape I.at n=16A251077
- Arises in enumeration of locally convex functions.at n=19A271493
- Numbers k such that 3 is the smallest decimal digit of k^4.at n=28A291671
- Number of states in the evolutionary spatial prisoner's dilemma with n players.at n=24A308620
- Irregular table read by rows: T(n,k) is the number of k-sided polygons, for k>=3, in a square when straight line segments connect the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the square.at n=57A355801