3476
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6720
- Proper Divisor Sum (Aliquot Sum)
- 3244
- 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
- 1560
- Möbius Function
- 0
- Radical
- 1738
- 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
- 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 T2 for Zeolite Code BPH.at n=45A008056
- a(n) = [ Sum{(log(j)-log(i))^3} ], 2 <= i < j <= n.at n=52A025207
- Number of labeled servers of dimension 11.at n=3A027398
- Convolution of natural numbers n >= 1 with Lucas numbers L(k) (A000032) for k >= 3.at n=10A033813
- Numerators of continued fraction convergents to sqrt(14).at n=9A041020
- Numbers k such that the string 8,2 occurs in the base 9 representation of k but not of k-1.at n=46A044325
- Numbers n such that string 7,6 occurs in the base 10 representation of n but not of n-1.at n=37A044408
- Numbers n such that string 7,6 occurs in the base 10 representation of n but not of n+1.at n=37A044789
- Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2); sequence gives values of u2.at n=12A048190
- Starting positions of strings of 2 4's in the decimal expansion of Pi.at n=31A050230
- Numbers k such that k^128 + 1 is prime.at n=13A056994
- A014486-encodings of Catalan mountain ranges with no sea-level valleys, i.e., the rooted plane general trees with root degree = 1.at n=28A057547
- Sum of terms in simple continued fraction for Sum_{k=0..n} 1/k!.at n=53A058299
- McKay-Thompson series of class 51A for the Monster group.at n=51A058704
- Number of partitions of n such that all parts are neither relatively prime (cf. A000837) nor are they periodic with each part occurring the same number of times (cf. A024994).at n=55A060034
- Arithmetic mean of largest subset of {A063676(1), ......., A063676(n-1)} such that a(n) is an integer and a(n) is maximal.at n=37A063678
- Multiples of 11 in which the even positioned digits from left are even and the odd positioned ones are odd.at n=38A080466
- Starting positions of strings of three 4's in the decimal expansion of Pi.at n=2A083615
- Row sums of triangle A097094 and also equals the self-convolution of A097097 (antidiagonal sums of triangle A097094).at n=13A097096
- a(n) = 2*a(n-1) - 3*a(n-2) + 2*a(n-3) with a(0) = 3, a(1) = 4, a(2) = 0.at n=22A105576