5858
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9180
- Proper Divisor Sum (Aliquot Sum)
- 3322
- 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
- 2800
- Möbius Function
- -1
- Radical
- 5858
- Omega Function (Ω)
- 3
- 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
- 98
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Convolution of natural numbers >= 2 and natural numbers >= 3.at n=28A023545
- Number of up/down (initially ascending) compositions of n.at n=21A025048
- a(n) = (d(n)-r(n))/5, where d = A026063 and r is the periodic sequence with fundamental period (1,4,0,0,0).at n=45A026065
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 6.at n=19A031419
- a(n)^2 is a square whose digits occur with an equal minimum frequency of 2.at n=21A052049
- Number of chiral pairs of planar maps with n edges.at n=7A054937
- Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 24 (most significant digit on right, least significant zeros not written).at n=17A061953
- a(n) = Sum_{0 < d <= t <= n, d|n, t|n} d*t.at n=41A067692
- How many more primes than irreducible GF(2)[X] polynomials there are in range [2^n,2^(n+1)].at n=18A091232
- a(n) = Sum_{i=1..n} A005235(i).at n=41A097589
- Number of partitions of n with parts occurring at most thrice and an even number of parts. Row sums of A098489.at n=40A098491
- Number of partitions of n with parts occurring at most thrice and an odd number of parts. Row sums of A098490.at n=40A098492
- a(n) = a(n-1) + 4*a(n-2) for n>1, a(0) = a(1) = 2.at n=9A102446
- a(n) = A104908(n) - 100*A104803(n).at n=19A104910
- Cumulative sum of quintuple factorial numbers n!!!!! (A085157).at n=17A114805
- a(n) = floor(n^3/3).at n=26A131476
- Fourth row of A166091. Positions of 7's in A166086.at n=30A166056
- Sums of NW-SE diagonals of triangle A172171.at n=14A172172
- Number of lower triangles of a 3 X 3 0..n array with no element differing from any of its horizontal or vertical neighbors by more than one.at n=34A194932
- Number of (w,x,y,z) with all terms in {1,...,n} and 3*w = x+y+z.at n=26A212069