9230
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 18144
- Proper Divisor Sum (Aliquot Sum)
- 8914
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3360
- Möbius Function
- 1
- Radical
- 9230
- 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
- 91
- 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
- McKay-Thompson series of class 30B for the Monster group with a(0) = 0.at n=33A058613
- Reversion of y - y^2 + y^4 - y^5.at n=12A063026
- w values for A071352.at n=8A071087
- Least positive integer multiples of angle x such that their direction cosines form a unit vector: Sum_{k>0} cos(a(k)*x)^2 = 1, where a(1)=1, a(n+1)>a(n) and x=5/4.at n=44A080198
- Convoluted convolved Fibonacci numbers G_8^(r).at n=10A089115
- Slowest increasing sequence where the absolute difference between the last digit of a(n) and the first digit of a(n+1) equals 9.at n=35A101243
- Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k valleys.at n=51A101282
- Numbers n such that n^24 + 1 = p*q with p,q distinct primes.at n=17A119982
- Number of ways to place 3 nonattacking kings on a 3 X n board.at n=14A172202
- Number of strings of numbers x(i=1..6) in 0..n with sum i^4*x(i) equal to 1296*n.at n=24A184352
- Numbers k such that (2^k + 3)^2 - 8 is prime.at n=32A188936
- a(n) = 2*a(n-1) - 2*a(n-2) + a(n-3) + 2*a(n-4) starting with a(0..3) = 0, 0, 0, 1.at n=23A192395
- Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2>=x^2+y^2.at n=33A211636
- -10-Knödel numbers.at n=41A225514
- Numbers that begin a run of an odd number of consecutive integers whose cubes sum to a square.at n=9A253679
- Expansion of f(-x^3, -x^7) * f(x^4, x^6) / psi(-x)^2 in powers of x where psi(), f(,) are Ramanujan theta functions.at n=24A259393
- Numbers k such that the number of divisors of k+2 divides k and the number of divisors of k divides k+2.at n=45A268037
- Magic sums of 4 X 4 magic squares composed of squares.at n=9A271580
- Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 517", based on the 5-celled von Neumann neighborhood.at n=13A282825
- Numbers k such that 12*10^k + 1 is prime.at n=4A294396