6208
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 14
- Divisor Sum
- 12446
- Proper Divisor Sum (Aliquot Sum)
- 6238
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 3072
- Möbius Function
- 0
- Radical
- 194
- Omega Function (Ω)
- 7
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 124
- 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
- Permanent of a certain cyclic n X n (0,1) matrix.at n=10A000804
- Number of chiral trees with n nodes.at n=13A005630
- Triangle read by rows: T(n,k) = number of permutations of [n] allowing i->i+j (mod n), j=0..k-1.at n=49A008305
- Expansion of tan(sinh(x))*sin(x).at n=4A009682
- Powers of fifth root of 8 rounded down.at n=21A018135
- Powers of fifth root of 8 rounded to nearest integer.at n=21A018136
- Numbers with 14 divisors.at n=26A030632
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 13 ones.at n=14A031781
- Four times second pentagonal numbers: a(n) = 2*n*(3*n+1).at n=32A033580
- Numbers having four 4's in base 6.at n=14A043388
- Number of ordered factorizations indexed by prime signatures: A074206(A025487).at n=49A050324
- A simple grammar: power set of pairs of sequences.at n=21A052812
- Triangle read by rows: this is a variant of A008280 in which 2 rows go from left to right, 2 from right to left, 2 from left to right, etc.at n=62A058257
- Numbers k such that phi(x) = k has exactly 10 solutions.at n=33A060673
- Numbers whose divisors can be partitioned in exactly one way into two disjoint sets with the same sum.at n=45A083209
- Nonprimes in A084111.at n=37A084112
- a(n) = (prime(n)-1)*(prime(n)+1)/6.at n=41A084922
- a(n) = 2*a(n-1) + 12*a(n-2).at n=6A091914
- Number of occurrences of pattern 1-2 after n iterations of morphism A007413.at n=6A093356
- a(n) = p*(p+(2n-1))/2, where p = A096822(n) is the smallest primes of form 2^x-(2n-1).at n=15A096823