3464
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
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6510
- Proper Divisor Sum (Aliquot Sum)
- 3046
- 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
- 866
- Omega Function (Ω)
- 4
- 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
- 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
- yes
- Odd
- no
Appears in sequences
- Coordination sequence T1 for Zeolite Code APD.at n=39A008034
- Coordination sequence T8 for Zeolite Code PAU.at n=43A008226
- Expansion of e.g.f.: tanh(log(1+tanh(x))).at n=8A009774
- Coordination sequence for FeS2-Pyrite, Fe position.at n=27A009957
- Coordination sequence for sigma-CrFe, Position Xb.at n=15A009960
- Expansion of 1/(1-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15).at n=37A017846
- a(n) = n*(27*n + 1)/2.at n=16A022285
- Sum of distinct prime divisors of prime(n)*prime(n-1) - 1.at n=41A023521
- a(n) = T(2n-1,n), where T is the array in A026148.at n=5A026156
- a(n)/1000 gives sqrt(n) to 3 places after the decimal point.at n=11A027662
- 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 13.at n=30A031511
- Decimal part of a(n)^(1/2) starts with reversal of its integer part: first term of runs.at n=42A034308
- Number of partitions of n into parts not of the form 11k, 11k+2 or 11k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 4 are greater than 1.at n=35A035945
- Number of partitions of n such that cn(0,5) = cn(2,5) <= cn(1,5) <= cn(3,5) = cn(4,5).at n=62A036848
- Numbers whose sum of reciprocals of digits is the reciprocal of an integer.at n=36A037264
- Sum of reciprocals of digits = 1.at n=18A037268
- Numbers k such that the string 6,8 occurs in the base 9 representation of k but not of k-1.at n=46A044313
- Numbers n such that string 6,4 occurs in the base 10 representation of n but not of n-1.at n=37A044396
- Numbers n such that string 6,4 occurs in the base 10 representation of n but not of n+1.at n=37A044777
- Layer counting sequence for hyperbolic tessellation by cuspidal triangles of angles (Pi/3, Pi/5, Pi/7).at n=13A054887