2868
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6720
- Proper Divisor Sum (Aliquot Sum)
- 3852
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 952
- Möbius Function
- 0
- Radical
- 1434
- 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
- 35
- 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
- Coordination sequence T5 for Zeolite Code VNI.at n=33A009911
- Positive numbers k such that k and 3*k are anagrams in base 9 (written in base 9).at n=33A023080
- Integer part of ((4th elementary symmetric function of 1,2,...,n)/(1+2+...+n)).at n=9A024171
- Number of strings of n distinct digits from 0-9 that are the last n digits of a square in base 10.at n=4A036755
- A variant of the recurrence for A001190.at n=18A038751
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=31A044400
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=31A044781
- Sum of the first n palindromes (A002113).at n=31A046489
- Numbers with multiplicative persistence value 5.at n=32A046514
- a(n) = floor(47*(n-3/2)^(3/2)).at n=15A050256
- Triangular array T: put T(n,0)=n for all n >= 0 and all other T(n,k)=0; then put T(n,k)=Sum{T(i,j): 0<=j<=i-n+k, n-k<=i<=n}.at n=27A054144
- Row sums of triangle A054336 (central binomial convolutions).at n=9A054341
- Numbers n such that sigma(n) = phi(prime(n)+1).at n=17A067625
- Number of different positive integers that we can obtain from the integers {1,2,...,n} using each number at most once and the operators +, -, *, /, where intermediate subexpressions must be integers.at n=6A071603
- Sequence A075171 interpreted as binary numbers and converted to decimal.at n=39A075170
- a(n) = A014486(A080068(n)).at n=6A080069
- A014486-encodings of the trees whose interior zigzag-tree (Stanley's c) is branch-reduced (in the sense defined by Donaghey).at n=27A080981
- A014486-encodings of the plane binary trees and plane general trees whose left(most) subtree is just a "stick": \.at n=40A083937
- Partial sums of a binomial quotient.at n=43A084267
- Numbers n such that A007306(n) divides n.at n=31A091765