5204
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 9114
- Proper Divisor Sum (Aliquot Sum)
- 3910
- 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
- 2600
- Möbius Function
- 0
- Radical
- 2602
- 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
- 28
- 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
- Squares written in base 6.at n=34A001741
- Coordination sequence T1 for Cordierite.at n=43A008251
- Coordination sequence for NiAs(2), Ni position.at n=34A009946
- a(0) = 1, a(n) = 18*n^2 + 2 for n>0.at n=17A010008
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 36.at n=30A031534
- Number of partitions of n into parts not of the form 19k, 19k+4 or 19k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 8 are greater than 1.at n=32A035973
- Number of partitions of n into parts not of the form 23k, 23k+5 or 23k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 10 are greater than 1.at n=31A035993
- Sums of 5 distinct powers of 4.at n=14A038473
- a(n)=(s(n)+2)/9, where s(n)=n-th base 9 palindrome that starts with 7.at n=31A043078
- Row 4 of array in A047666.at n=10A047668
- First position of n in continued fraction for Khinchin's constant.at n=43A054781
- Numbers n such that x^n + x^9 + 2 is irreducible over GF(3).at n=10A058234
- McKay-Thompson series of class 22A for Monster.at n=21A058567
- a(0)=1; a(n) = sigma_2(n) + sigma_3(n).at n=17A092344
- Square spiral of sums of selected preceding terms, starting at 1 (a spiral Fibonacci-like sequence).at n=16A094767
- a(0) = 0, a(1) = 1, a(n) = (a(n-1) mod F(n))*a(n-1) + a(n-2) for n > 2 where F(n) is the n-th Fibonacci number.at n=9A097565
- Structured tetrakis hexahedral numbers (vertex structure 5).at n=11A100174
- Sum of the sides of ordered 2 X 2 prime squares.at n=29A105088
- a(n) = 8*n^2 + 8*n + 4.at n=25A108099
- Number of compositions of {1,..,n} such that no two adjacent parts are of equal size (labeled Carlitz compositions), allowing parts to be of size 0.at n=5A114903