1058
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1659
- Proper Divisor Sum (Aliquot Sum)
- 601
- 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
- 506
- Möbius Function
- 0
- Radical
- 46
- Omega Function (Ω)
- 3
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 31
- 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
- a(n) = ceiling(n^2/2).at n=46A000982
- a(n) = 2*n^2.at n=23A001105
- The square sieve.at n=58A002960
- Numbers that are the sum of 4 positive 5th powers.at n=16A003349
- Number of (undirected) Hamiltonian paths in the n-ladder graph K_2 X P_n.at n=32A003682
- Numbers that are the sum of at most 4 positive 5th powers.at n=41A004844
- Number of factorization patterns of polynomials of degree n over F_4.at n=13A006169
- Number of irreducible polyhedral graphs with n nodes.at n=8A006866
- a(n) = floor(n^2/2).at n=46A007590
- Coordination sequence T2 for Zeolite Code DOH.at n=20A008079
- Coordination sequence T1 for Zeolite Code FER.at n=20A008106
- Coordination sequence T1 for Zeolite Code GIS.at n=24A008266
- Multiples of 23.at n=46A008605
- Aliquot sequence starting at 180.at n=49A008891
- Coordination sequence for FeS2-Marcasite, S position.at n=16A009954
- Expansion of e.g.f.: exp(arctanh(x)*log(x+1))=1+2/2!*x^2-3/3!*x^3+28/4!*x^4-110/5!*x^5...at n=6A012697
- Smallest positive number that can be written as sum of distinct Fibonacci numbers in n ways.at n=27A013583
- a(n) = n^2 + n + 2.at n=32A014206
- Numbers m such that phi(m) * sigma(m) + k^2 is not a square for any k.at n=14A015713
- Denominator of sum of -2nd powers of divisors of n.at n=45A017668