3683
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3840
- Proper Divisor Sum (Aliquot Sum)
- 157
- 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
- 3528
- Möbius Function
- 1
- Radical
- 3683
- Omega Function (Ω)
- 2
- 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
- 131
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Cake numbers: maximal number of pieces resulting from n planar cuts through a cube (or cake): C(n+1,3) + n + 1.at n=28A000125
- Divisors of 2^28 - 1.at n=22A003536
- Coordination sequence T4 for Zeolite Code AFO.at n=40A008018
- Coordination sequence T4 for Zeolite Code AFR.at n=46A008022
- Fermat pseudoprimes to base 4.at n=26A020136
- Pseudoprimes to base 16.at n=35A020144
- Pseudoprimes to base 63.at n=15A020191
- Strong pseudoprimes to base 16.at n=20A020242
- Strong pseudoprimes to base 63.at n=8A020289
- a(n) = Sum_{k=1..n} floor((n/k)*floor(n/k)).at n=47A024921
- Numbers having period-1 7-digitized sequences.at n=22A031201
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 15 ones.at n=2A031783
- a(n) = (2*n+1)*(9*n+1).at n=14A033573
- Multiplicity of highest weight (or singular) vectors associated with character chi_34 of Monster module.at n=39A034422
- Coordination sequence T4 for Zeolite Code AFN.at n=43A038404
- Coordination sequence T4 for Zeolite Code SFF.at n=40A038434
- Starting positions of strings of 2 8's in the decimal expansion of Pi.at n=30A050263
- Numbers n such that 259*2^n-1 is prime.at n=13A050888
- 11-gonal (or hendecagonal) numbers: a(n) = n*(9*n-7)/2.at n=29A051682
- Numbers k > 1 such that, in base 4, k and k^2 contain the same digits in the same proportion.at n=18A061658