3237
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4704
- Proper Divisor Sum (Aliquot Sum)
- 1467
- 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
- 1968
- Möbius Function
- -1
- Radical
- 3237
- Omega Function (Ω)
- 3
- 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
- 48
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Numbers that are the sum of 10 positive 6th powers.at n=43A003366
- a(n) = 2^(n-1) + 2^[ n/2 ] + 2^[ (n-1)/2 ] - F(n+3).at n=13A005674
- Positions of remoteness 4 in Beans-Don't-Talk.at n=22A005696
- Coordination sequence T3 for Zeolite Code AEI.at n=43A008003
- Coordination sequence T1 for Zeolite Code -WEN.at n=41A009862
- a(n) = prime(n)*(prime(n-1)-1)/2.at n=20A014302
- T(2n-1,n-2), T given by A026692.at n=5A026697
- a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A027082.at n=3A027111
- Number of nonisomorphic groupoids with no symmetry.at n=3A030245
- 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 36.at n=27A031534
- Concatenation of n and n + 5 or {n,n+5}.at n=31A032610
- a(n) = n*(2*n+5).at n=39A033537
- Multiplicity of highest weight (or singular) vectors associated with character chi_43 of Monster module.at n=34A034431
- Numbers n such that string 3,7 occurs in the base 10 representation of n but not of n-1.at n=35A044369
- Numbers n such that string 3,7 occurs in the base 10 representation of n but not of n+1.at n=35A044750
- Concatenate "n" and "nextprime(n)".at n=31A049852
- Numbers k such that 2^k - 3 is prime.at n=29A050414
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 4.at n=41A051969
- Discriminants of real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd.at n=36A051992
- Discriminants of real quadratic number fields K with class number 2 such that the Hilbert class field of K is K(sqrt(13)).at n=46A052478