2184
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
- 32
- Divisor Sum
- 6720
- Proper Divisor Sum (Aliquot Sum)
- 4536
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 576
- Möbius Function
- 0
- Radical
- 546
- Omega Function (Ω)
- 6
- Little Omega Function (ω)
- 4
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
- 32
- 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
- Order of the group SL(2,Z_n).at n=12A000056
- a(n) = n^2*Product_{p|n} (1 + 1/p).at n=38A000082
- a(n) = floor(2^n / n).at n=14A000799
- Weight distribution of [ 28,14,9 ] ternary self-dual code.at n=3A002521
- Coefficient of x^4 in expansion of (1+x+x^2)^n.at n=12A005712
- Alkane (or paraffin) numbers l(8,n).at n=11A005995
- List of periods for game of Third One Lucky.at n=28A006018
- a(n) = Sum_{k=1..n-1} lcm(k,n-k).at n=28A006580
- a(n) = n*(n-1)*(n-2) (or n!/(n-3)!).at n=14A007531
- Successive integers produced by Conway's PRIMEGAME.at n=39A007542
- Coordination sequence T5 for Zeolite Code GOO.at n=32A008115
- Coordination sequence T1 for Zeolite Code MEI.at n=34A008146
- Coordination sequence T2 for Zeolite Code MTW.at n=31A008197
- Coordination sequence T7 for Zeolite Code NES.at n=30A008211
- Coordination sequence T2 for Milarite.at n=29A008257
- Theta series of A_8 lattice.at n=3A008448
- a(n) = lcm(n, sigma(n)).at n=38A009242
- Coordination sequence T1 for Zeolite Code -ROG.at n=35A009859
- a(n) = floor(n*(n-1)*(n-2)/9).at n=28A011891
- [ n(n-1)(n-2)(n-3)/11 ].at n=14A011921