3429
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5120
- Proper Divisor Sum (Aliquot Sum)
- 1691
- 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
- 2268
- Möbius Function
- 0
- Radical
- 381
- 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
- no
- Odd
- yes
Appears in sequences
- Coordination sequence T1 for Zeolite Code ATT.at n=42A008041
- Coordination sequence T2 for Zeolite Code DOH.at n=36A008079
- Coordination sequence T3 for Zeolite Code FER.at n=36A008108
- Coordination sequence T2 for Zeolite Code MTT.at n=36A008190
- E.g.f. tan(x*cosh(x)), zeros omitted.at n=3A009634
- Numbers k that divide s(k), where s(1)=1, s(j)=19*s(j-1)+j.at n=15A014869
- Integers k such that k divides 22^k - 1.at n=36A014959
- Carlitz-Riordan q-Catalan numbers (recurrence version) for q=-4.at n=4A015099
- Coefficient of x^(2*n+1) in arctanh(x)/sqrt(1-x^2), multiplied by (2*n+1)!.at n=3A028353
- Clog sequence in base 2. Right to left concatenation of n,int(log_2(n)),int(log_2(int(log_2(n)))),... in base 2.at n=36A028423
- Number of partitions in parts not of the form 17k, 17k+3 or 17k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 7 are greater than 1.at n=31A035964
- a(n) = floor((n^3)/2).at n=19A036487
- Divisible by 3 (and 9) and are differences between two cubes in at least one way.at n=35A038851
- Numbers ending with '9' that are the difference of two positive cubes.at n=16A038864
- a(n) = (n+3)^3 - n^3.at n=17A038865
- Numerators of continued fraction convergents to sqrt(471).at n=6A041898
- Numbers whose base-7 representation contains exactly three 6's.at n=26A043419
- Numbers k such that the string 3,0 occurs in the base 9 representation of k but not of k-1.at n=47A044278
- Numbers k such that the string 6,3 occurs in the base 9 representation of k but not of k-1.at n=46A044308
- Numbers n such that string 2,9 occurs in the base 10 representation of n but not of n-1.at n=38A044361