2836
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4970
- Proper Divisor Sum (Aliquot Sum)
- 2134
- 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
- 1416
- Möbius Function
- 0
- Radical
- 1418
- Omega Function (Ω)
- 3
- 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
- 35
- 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
- Number of fixed properly-3-dimensional polyominoes with n cells.at n=5A006763
- Coordination sequence T1 for Zeolite Code ATV.at n=34A008043
- Coordination sequence T2 for Zeolite Code AWW.at n=38A008046
- Coordination sequence T4 for Zeolite Code BRE.at n=35A008061
- Coordination sequence T10 for Zeolite Code MFI.at n=34A008162
- Coordination sequence T1 for Zeolite Code NES.at n=34A008205
- Coordination sequence T3 for Zeolite Code NES.at n=34A008207
- Coordination sequence T3 for Zeolite Code SGT.at n=33A008231
- Coordination sequence T1 for Zeolite Code AHT.at n=36A009866
- Molien series of 4-dimensional representation of u.g.g.r. #9.at n=9A013977
- Molien series of 4-dimensional representation of u.g.g.r. #8.at n=18A013978
- Numbers k such that Fibonacci(k) == 3 (mod k).at n=34A023175
- 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 26.at n=32A031524
- Concatenation of n and n + 8 or {n,n+8}.at n=27A032613
- Number of prime powers (p^2, p^3, ...) <= 2^n.at n=28A036386
- Numbers whose base-7 representation contains exactly four 1's.at n=14A043400
- Numbers k such that string 0,1 occurs in the base 9 representation of k but not of k-1.at n=37A044252
- Numbers n such that string 3,6 occurs in the base 10 representation of n but not of n-1.at n=31A044368
- Numbers n such that string 0,1 occurs in the base 9 representation of n but not of n+1.at n=37A044633
- Numbers n such that string 3,6 occurs in the base 10 representation of n but not of n+1.at n=31A044749