5800
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 13950
- Proper Divisor Sum (Aliquot Sum)
- 8150
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2240
- Möbius Function
- 0
- Radical
- 290
- Omega Function (Ω)
- 6
- 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
- 23
- 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 for tridymite, lonsdaleite, and wurtzite.at n=47A008264
- Coordination sequence for MgNi2, Position Mg2.at n=19A009935
- a(n) is nonsquarefree and is sum of first k nonsquarefrees for some k.at n=29A013935
- Powers of fifth root of 15 rounded down.at n=16A018156
- a(n) = L(n+1) + c(n) where L(k) = k-th Lucas number and c(n) is n-th number that is 1 or not a Lucas number.at n=16A022802
- Sum of n-th Lucas number greater than 3 and n-th number that is 1 or is not a Fibonacci number.at n=15A023489
- a(n) = b(n) + d(n), where b(n) = (n-th Lucas number > 3) and d(n) = (n-th non-Lucas number).at n=15A023495
- dot product (n,n-1,...2,1).(3,4,...,n,1,2).at n=27A026054
- 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 37.at n=28A031535
- Numbers whose set of base-12 digits is {3,4}.at n=19A032836
- Differences of A038011.at n=28A038012
- Number of n-step self-avoiding paths on quadrant grid starting at quadrant origin.at n=10A038373
- Numbers whose base-4 representation contains exactly two 1's and four 2's.at n=24A045099
- Reversion of partitions into distinct parts A000009.at n=12A050393
- a(n) = n * next number greater than n with same first digit as n.at n=28A060317
- Number of 4-block ordered tricoverings of an unlabeled n-set.at n=28A060488
- Numbers k such that phi(x) = k has exactly 10 solutions.at n=32A060673
- a(n) is the smallest number such that gcd(a(n), sigma(a(n))) = n.at n=49A074391
- Main diagonal of array A082224.at n=38A082227
- Least number x such that gcd(x, pi(x)) = n.at n=39A087271