3285
domain: N
Properties
Digital Properties
- Digit Count
- 4
- 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
- 5772
- Proper Divisor Sum (Aliquot Sum)
- 2487
- 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
- 1728
- Möbius Function
- 0
- Radical
- 1095
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 30
- 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
- no
- Odd
- yes
Appears in sequences
- Number of cubic bicolored graphs on n unlabeled nodes admitting an automorphism exchanging the colors.at n=11A000840
- Number of precomplete Post functions.at n=4A002824
- Expansion of Jacobi theta constant theta_2^6 /(64q^(3/2)).at n=42A008440
- Powers of fourth root of 19 rounded down.at n=11A018099
- Powers of fourth root of 19 rounded to nearest integer.at n=11A018100
- Pseudoprimes to base 46.at n=37A020174
- Expansion of Product_{m>=1} (1+x^m)^15.at n=4A022580
- Coordination sequence T3 for Zeolite Code MWW.at n=38A024988
- a(n) = (n^4 + n)/2 (Row sums of an n X n X n magic cube, when it exists).at n=9A027441
- Multiplicity of highest weight (or singular) vectors associated with character chi_179 of Monster module.at n=37A034567
- Coordination sequence T8 for Zeolite Code SFF.at n=38A038435
- Number of partitions satisfying cn(2,5) + cn(3,5) <= 1.at n=36A039857
- Numbers k such that the string 4,5 occurs in the base 9 representation of k but not of k-1.at n=45A044292
- Numbers n such that string 8,5 occurs in the base 10 representation of n but not of n-1.at n=35A044417
- Numbers n such that string 8,5 occurs in the base 10 representation of n but not of n+1.at n=35A044798
- Numbers whose base-5 representation contains exactly two 0's and three 1's.at n=24A045168
- Erroneous version of A028419.at n=11A046664
- Values of k for which A075059(k) = A003418(k) + 1 is prime.at n=72A049537
- a(n) = a(n-1) + a(m) for n >= 4, where m = 2^(p+1) + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = a(3) = 1.at n=47A050025
- Golden rectangle numbers: n * A007067(n).at n=45A050508