3068
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5880
- Proper Divisor Sum (Aliquot Sum)
- 2812
- 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
- 1392
- Möbius Function
- 0
- Radical
- 1534
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 61
- 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
- Representation degeneracies for Ramond strings.at n=13A005305
- Coordination sequence T4 for Zeolite Code AFR.at n=42A008022
- Coordination sequence T1 for Zeolite Code LEV.at n=41A008127
- Coordination sequence T6 for Zeolite Code MTT.at n=34A008194
- Coordination sequence T2 for Scapolite.at n=35A008263
- Triangle of multi-edge stars with n edges by cyclotomic index.at n=61A010358
- Twelve iterations of Reverse and Add are needed to reach a palindrome.at n=11A015993
- Sequence A025513 divided by 2.at n=25A025514
- Number of (s(0), s(1), ..., s(2n)) such that s(i) is a nonnegative integer and |s(i) - s(i-1)| = 1 for i = 1,2,...,n, s(0) = 3, s(2n) = 3. Also T(2n,n), where T is defined in A026022.at n=7A026029
- T(n,[ n/2 ]), where T is defined in A026022.at n=14A026034
- Number of 3-unbalanced strings of length n (= 2^n - A027557(n)).at n=12A027558
- a(n) = n*(n+7).at n=52A028563
- Number of partitions of n into parts not of the form 21k, 21k+4 or 21k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 9 are greater than 1.at n=29A035982
- a(n) = prime(n)*prime(n+1) - prime(n+1).at n=15A037167
- Coordination sequence T2 for Zeolite Code AWO.at n=38A038407
- Numbers n such that the string 7,8 occurs in the base 9 representation of n but not of n-1.at n=37A044322
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=33A044400
- Numbers n such that string 7,8 occurs in the base 9 representation of n but not of n+1.at n=37A044703
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=33A044781
- Numbers whose base-4 representation contains exactly one 0 and four 3's.at n=13A045070