3268
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6160
- Proper Divisor Sum (Aliquot Sum)
- 2892
- 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
- 1512
- Möbius Function
- 0
- Radical
- 1634
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 43
- 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
- a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2*x^2) / (1 - x)^4.at n=18A006000
- Number of connected trivalent graphs with 2n nodes and with girth exactly 3.at n=8A006923
- Coordination sequence T1 for Zeolite Code ATT.at n=41A008041
- Coordination sequence T2 for Zeolite Code ATT.at n=41A008042
- Coordination sequence T2 for Cordierite.at n=34A008252
- Crystal ball sequence for planar net 4.8.8.at n=49A008577
- Coordination sequence T1 for Zeolite Code RTE.at n=39A009890
- Coordination sequence T3 for Zeolite Code RTE.at n=39A009892
- Coordination sequence T2 for Zeolite Code OSI.at n=37A016431
- Pseudoprimes to base 49.at n=47A020177
- Metadromes: digits in base 7 are in strict ascending order.at n=58A023776
- a(n) = [ 1/(2*t(n+1) - t(n) - t(n+2)) ], where t(n) = tan(Pi/2 - 1/n) satisfies n-1 < t(n) < n for all n >= 1.at n=11A024817
- a(n) = least m such that if r and s in {1/3, 1/6, 1/9,..., 1/3n} satisfy r < s, then r < k/m < s for some integer k.at n=37A024824
- Least term in period of continued fraction for sqrt(n) is 6.at n=21A031430
- Number of partitions of n into parts not of the form 25k, 25k+6 or 25k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=28A036005
- a(n) = a(n-1) + prime(n-1), with a(1)=2.at n=41A036439
- Sums of 6 distinct powers of 3.at n=25A038468
- Numerators of continued fraction convergents to sqrt(586).at n=6A042122
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=35A044400
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=35A044781