2060
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4368
- Proper Divisor Sum (Aliquot Sum)
- 2308
- 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
- 816
- Möbius Function
- 0
- Radical
- 1030
- Omega Function (Ω)
- 4
- 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
- Partial sums of (unordered) ways of making change for n cents using coins of 1, 2, 5, 10 cents.at n=38A000064
- a(n) = 2^n + n + 1.at n=11A005126
- Number of minimal plane trees with n terminal nodes.at n=43A006241
- 'Eban' numbers (the letter 'e' is banned!).at n=35A006933
- Coordination sequence for hexagonal close-packing.at n=14A007899
- Coordination sequence T2 for Zeolite Code EAB and OFF.at n=33A008083
- Coordination sequence T2 for Zeolite Code ERI.at n=33A008094
- Coordination sequence for tridymite, lonsdaleite, and wurtzite.at n=28A008264
- a(0) = 1, a(n) = 42*n^2 + 2 for n>0.at n=7A010023
- Expansion of Jacobi theta constant (theta_2/2)^16.at n=4A014805
- Number of 5-tuples of different integers from [ 2,n ] with no common factors among triples.at n=16A015649
- Expansion of 1/(1-x^3-x^4-x^5-x^6-x^7-x^8-x^9).at n=25A017822
- Number of lines through exactly 9 points of an n X n grid of points.at n=54A018816
- a(n) is the concatenation of n and 3n.at n=19A019551
- Positive numbers k such that k and 3*k are anagrams in base 9 (written in base 9).at n=21A023080
- Number of partitions of n into an even number of parts, the least being 5; also, a(n+5) = number of partitions of n into an odd number of parts, each >=5.at n=63A027197
- 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 22.at n=30A031520
- Number of partitions of 5n such that cn(0,5) <= cn(1,5) = cn(4,5) <= cn(2,5) = cn(3,5).at n=8A036880
- Positive numbers having the same set of digits in base 7 and base 10.at n=19A037440
- Number of partitions satisfying cn(0,5) = cn(1,5) + cn(4,5).at n=39A039858