1996
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3500
- Proper Divisor Sum (Aliquot Sum)
- 1504
- 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
- 996
- Möbius Function
- 0
- Radical
- 998
- 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
- 50
- 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 switching networks (see Harrison reference for precise definition).at n=2A000814
- Numbers that are the sum of 5 positive 5th powers.at n=35A003350
- Number of nonequivalent dissections of a polygon into n triangles by nonintersecting diagonals rooted at a cell up to rotation and reflection.at n=9A003446
- Number of words of length n in a certain language.at n=25A005819
- a(n) = 1 + n/2 + 9*n^2/2.at n=21A006137
- Coordination sequence T1 for Zeolite Code LOS.at n=31A008132
- Coordination sequence T2 for Zeolite Code iRON.at n=31A009882
- Expansion of 1/(1-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15).at n=35A017846
- Place where n-th 1 occurs in A023133.at n=35A022795
- Numbers k such that Fibonacci(k) == 3 (mod k).at n=26A023175
- Number of partitions of n into an even number of parts, the least being 6; also, a(n+6) = number of partitions of n into an odd number of parts, each >=6.at n=70A027198
- Coordination sequence T1 for Zeolite Code CGS.at n=33A027365
- Positions of record values in A030777.at n=40A030782
- 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=26A031520
- Numbers k such that 55*2^k+1 is prime.at n=13A032377
- a(n)=(s(n)+2)/5, where s(n)=n-th base 5 palindrome that starts with 3.at n=41A043052
- Numbers k such that 6 and 9 occur juxtaposed in the base-10 representation of k but not of k-1.at n=39A043257
- Numbers whose base-7 representation contains exactly three 5's.at n=16A043415
- Numbers k such that 6 and 9 occur juxtaposed in the base-10 representation of k but not of k+1.at n=39A044037
- Numbers n such that string 1,4 occurs in the base 8 representation of n but not of n-1.at n=35A044199