2058
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 4800
- Proper Divisor Sum (Aliquot Sum)
- 2742
- 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
- 588
- Möbius Function
- 0
- Radical
- 42
- Omega Function (Ω)
- 5
- 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
- 125
- 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
- Number of oriented rooted trees with n nodes. Also rooted trees with n nodes and 2-colored non-root nodes.at n=6A000151
- A generalized partition function.at n=12A002601
- a(n) = n*phi(n).at n=48A002618
- Theta series of 6-dimensional lattice A_6^(2) (other names for this lattice or the corresponding quadratic form are LAMBDA_{3,lambda}, P_6^(5), phi_6, F_14).at n=18A002706
- Numbers that are the sum of 12 positive 10th powers.at n=2A004812
- Numbers that are the sum of 11 positive 11th powers.at n=1A004822
- Numbers that are the sum of at most 12 nonzero 10th powers.at n=35A004907
- Numbers that are the sum of at most 11 positive 11th powers.at n=22A004917
- Numbers that are the sum of at most 12 positive 11th powers.at n=23A004918
- Number of numbers of complexity n, i.e., that can be built from n ones using + and *, and require at least that many ones.at n=26A005421
- Number of self-converse oriented trees with n nodes.at n=13A007748
- Coordination sequence T6 for Zeolite Code BOG.at n=32A008054
- Coordination sequence T4 for Zeolite Code DOH.at n=28A008081
- a(n) = floor(n/4)*floor((n+1)/4)*floor((n+2)/4)*floor((n+3)/4).at n=27A008233
- floor(n/5)*floor((n+1)/5)*floor((n+2)/5)*floor((n+3)/5).at n=34A008381
- Coordination sequence T5 for Zeolite Code VNI.at n=28A009911
- Coordination sequence for alpha-Nd, Position Nd1.at n=14A009948
- A B_2 sequence: a(n) = least value such that sequence increases and pairwise sums of distinct elements are all distinct.at n=37A011185
- Numbers k such that the geometric mean of phi(k) and sigma(k) is an integer.at n=30A011257
- Numbers k such that k divides 2^(k+1) - 2.at n=18A014741