8766
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 27
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 19032
- Proper Divisor Sum (Aliquot Sum)
- 10266
- 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
- 2916
- Möbius Function
- 0
- Radical
- 2922
- 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
- 78
- Smith Number
- yes
- 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
- n written in fractional base 9/8.at n=33A024656
- a(n) = T(n,0) + T(n,1) + ... + T(n,n), T given by A026536.at n=11A026548
- Number of days in n years (n=4 is the first leap year).at n=23A033171
- Number of days in n years (n=3 is the first leap year).at n=23A033172
- Number of days in n years (n=2 is the first leap year).at n=23A033173
- Number of days in n years (n=1 is the first leap year).at n=23A033174
- Number of 3-component Carmichael numbers C = (6M + 1)(12M + 1)(18M + 1) < 10^n.at n=19A036060
- Gaps of 2 in sequence A038593 (upper terms).at n=12A038644
- Numbers that are divisible by 6 (and 18) and are differences between two cubes in at least one way.at n=28A038852
- Numbers ending with '6' that are the difference of two positive cubes.at n=33A038861
- Number of partitions satisfying cn(1,5) + cn(4,5) <= cn(0,5) + cn(2,5) + cn(3,5).at n=35A039866
- Number of compositions of n into 4 parts such that no two adjacent parts are equal.at n=35A106353
- Number of Fibonacci parts in the last section of the set of partitions of n.at n=29A144117
- a(n) = 1458*n + 18.at n=5A157505
- Number of binary strings of length n with equal numbers of 0010 and 1101 substrings.at n=15A164173
- Number of binary strings of length n with equal numbers of 00100 and 01101 substrings.at n=14A164238
- Numbers n which divide the periodic part (with zeros at end) of the decimal expansion of 1/n.at n=10A179267
- Number of 5-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=8A187300
- Number of nX1 1..3 arrays with every element value z a city block distance of exactly z from another element value z.at n=18A209360
- Number of 1 up, 1 down, 2 up, 1 down, 3 up, 1 down, ... permutations of [n].at n=10A247550