2512
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 10
- Divisor Sum
- 4898
- Proper Divisor Sum (Aliquot Sum)
- 2386
- 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
- 1248
- Möbius Function
- 0
- Radical
- 314
- Omega Function (Ω)
- 5
- 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
- 40
- 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
- Heptagonal numbers (or 7-gonal numbers): n*(5*n-3)/2.at n=32A000566
- Number of non-Abelian metacyclic groups of order p^n (p odd).at n=52A007983
- Coordination sequence T1 for Zeolite Code AFR.at n=38A008019
- Coordination sequence T4 for Zeolite Code AFR.at n=38A008022
- Coordination sequence T2 for Zeolite Code ATV.at n=32A008044
- Coordination sequence T7 for Zeolite Code NES.at n=32A008211
- Coordination sequence T1 for Moganite.at n=32A008258
- Coordination sequence T1 for Zeolite Code GIS.at n=37A008266
- Expansion of log(1+sinh(x)*cos(x)).at n=8A009357
- Shifts 6 places right under inverse binomial transform.at n=12A010750
- Even heptagonal numbers (A000566).at n=16A014640
- Powers of fifth root of 10 rounded to nearest integer.at n=17A018142
- Powers of fifth root of 10 rounded up.at n=17A018143
- Squares on infinite chessboard at n moves from center using a {2,3} fairy knight.at n=38A018839
- Numbers k such that the continued fraction for sqrt(k) has period 30.at n=38A020369
- Pisot sequences E(6,8), P(6,8).at n=21A020716
- Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-4).at n=27A023434
- a(n) = least 2k such that p is the least prime in a Goldbach partition of 2k, where p = prime(n).at n=15A025017
- a(n) = floor(4th elementary symmetric function of Sum_{j=1..k} 1/j, k = 1,2,...,n).at n=5A025214
- Coordination sequence T3 for Zeolite Code CGS.at n=37A027367