14898
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
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 32256
- Proper Divisor Sum (Aliquot Sum)
- 17358
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4560
- Möbius Function
- 1
- Radical
- 14898
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 115
- 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
- Numbers m such that 3*2^m - 1 is prime.at n=32A002235
- Number of set-like atomic species of degree n.at n=63A007650
- a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=28A010009
- a(n) = (d(n)-r(n))/2, where d = A026060 and r is the periodic sequence with fundamental period (1,0,0,0).at n=47A026061
- Number of partitions of n into parts not of the form 13k, 13k+2 or 13k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 5 are greater than 1.at n=43A035950
- a(n) = Sum_{k=1..n} lcm(k,n)/gcd(k,n).at n=34A056789
- Radius of inscribed circle within primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse.at n=39A089551
- Expansion of g.f. Product_{k>=1} 1/(1-x^sigma(k)).at n=51A111865
- Number of permutations of length n which avoid the patterns 1243, 4132, 4321.at n=10A116771
- Twice 12-gonal numbers: a(n) = 2*n*(5*n-4).at n=39A152965
- Number of 0..3 arrays of length n with each element differing from at least one neighbor by something other than 1.at n=7A221568
- T(n,k)=Number of 0..k arrays of length n with each element differing from at least one neighbor by something other than 1.at n=52A221573
- T(n,k)=Number of 0..k arrays of length n with each element differing from at least one neighbor by 1 or less.at n=52A221596
- Strings of 5 digits from 1...9, such that no formula using the single digits in the given order exists that evaluates to 0.at n=23A288355
- Partial sums of products of proper divisors of n (A007956).at n=25A339308
- G.f. A(x) satisfies A(x) = 1/( 1 - 9*x/(1 - x*A(x)) )^(1/3).at n=5A372108
- Numbers k such that (k*2^d - 1)*(d*2^k - 1) is semiprime for some divisor d of k.at n=41A382646