2236
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4312
- Proper Divisor Sum (Aliquot Sum)
- 2076
- 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
- 1008
- Möbius Function
- 0
- Radical
- 1118
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 89
- 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
- 2nd differences are periodic.at n=34A002082
- Coordination sequence T1 for Zeolite Code AFY.at n=39A008029
- Coordination sequence T4 for Zeolite Code FER.at n=29A008109
- Coordination sequence T7 for Zeolite Code MTT.at n=29A008195
- Coordination sequence for MgCu2, Mg position.at n=12A009931
- Number of (undirected) Hamiltonian paths in n-Moebius ladder.at n=13A020875
- Convolution of A023532 and A001950.at n=45A023603
- Coordination sequence T1 for Zeolite Code SAT.at n=34A027373
- a(n)/1000 gives sqrt(n) to 3 places after the decimal point.at n=4A027662
- a(n) = n*(n + 9).at n=43A028569
- a(n) = floor(10000/sqrt(n)).at n=19A033433
- Number of partitions satisfying cn(0,5) < cn(1,5) + cn(4,5) + cn(2,5) and cn(0,5) < cn(1,5) + cn(4,5) + cn(3,5).at n=25A039846
- Numerators of continued fraction convergents to sqrt(692).at n=6A042330
- Numbers whose base-13 representation has exactly 4 runs.at n=24A043659
- Numbers n such that string 7,4 occurs in the base 8 representation of n but not of n-1.at n=38A044247
- Numbers k such that string 5,4 occurs in the base 9 representation of k but not of k-1.at n=30A044300
- Numbers n such that string 3,6 occurs in the base 10 representation of n but not of n-1.at n=24A044368
- Numbers n such that string 7,4 occurs in the base 8 representation of n but not of n+1.at n=38A044628
- Numbers n such that string 5,4 occurs in the base 9 representation of n but not of n+1.at n=30A044681
- Numbers n such that string 3,6 occurs in the base 10 representation of n but not of n+1.at n=24A044749