14562
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
- 12
- Divisor Sum
- 31590
- Proper Divisor Sum (Aliquot Sum)
- 17028
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4848
- Möbius Function
- 0
- Radical
- 4854
- Omega Function (Ω)
- 4
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 19
- 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
- Positive numbers k such that k and 4*k are anagrams in base 7 (written in base 7).at n=19A023070
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = (odd natural numbers).at n=21A025093
- Coefficient of q^3 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=b*nu(n-1)+lambda*(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(1,2).at n=11A074354
- Interprimes which are of the form s*prime, s=18.at n=28A075293
- Round(1000*x), where x is the solution to x = 3^(n-x).at n=17A103537
- a(n) = 3*A131666(n) - A131666(n+1).at n=17A135259
- Averages of twin primes of the form : i^2+j^2, as sum of two squares.at n=26A143793
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 0, 1), (0, -1, 0), (1, 0, 1), (1, 1, -1)}.at n=8A149401
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (1, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.at n=7A150863
- a(n) = 1458*n - 18.at n=9A157508
- Table of coefficients of a polynomial sequence of binomial type related to A080635.at n=36A185415
- Numbers k such that phi(k-6) = phi(k) = phi(k+6).at n=19A217006
- Number of 0..n arrays of length 6 with each element differing from at least one neighbor by 1 or less, starting with 0.at n=26A221685
- Averages q of twin prime pairs, such that q concatenated to q is also the average of a twin prime pair.at n=21A235109
- Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=14A248439
- Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n^2-1, in order of increasing m.at n=24A256406
- Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n^2-1, in increasing order.at n=25A256407
- Numbers n such that n*prime(n) is a pandigital number containing digits 0-9 exactly once.at n=1A272552
- Number of compositions (ordered partitions) of n into nonprime squarefree parts (A000469).at n=36A290137
- Numbers with more than one Collatz tripling step whose odd Collatz trajectory does not contain primes.at n=23A319936