2244
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 6048
- Proper Divisor Sum (Aliquot Sum)
- 3804
- 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
- 640
- Möbius Function
- 0
- Radical
- 1122
- Omega Function (Ω)
- 5
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 45
- 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
- a(n) = 11*binomial(2n,n-5)/(n+6).at n=4A000589
- Squares written in base 5.at n=18A001740
- Erroneous version of A173380.at n=8A002932
- a(n) = n*(n+5)*(n+6)*(n+7)/24.at n=11A005587
- Coordination sequence T6 for Zeolite Code MFI.at n=30A008169
- a(n) = floor(n*(n-1)*(n-2)/16).at n=34A011898
- Poincaré series [or Poincare series] (or Molien series) for mod 2 cohomology of universal W-group W(4).at n=6A014697
- a(n) is the concatenation of n and 2n.at n=21A019550
- Long leg of more than one primitive Pythagorean triangle.at n=14A024410
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=28A026048
- a(n) = A026615(2*n-1, n-2).at n=5A026620
- a(n) = n*(n+7).at n=44A028563
- Theta series of 6-dimensional extremal 5-modular lattice Q6(4)^{+2}.at n=40A029721
- Numbers k such that k^2 and k^3 do not have any common digits.at n=22A029787
- Expansion of Molien series for 16-D extraspecial group 2^{1+2*4}.at n=4A030535
- (2^n+1)*(2^n+2)*(2^n+4)*(2^n+6)*(4^n+15*2^n+176)/8!.at n=4A030539
- Positions of record values in A030727.at n=42A030732
- Numbers k such that 225*2^k+1 is prime.at n=31A032489
- Every run of digits of n in base 10 has length 2.at n=21A033008
- Numbers whose base-10 expansion has no run of digits with length < 2.at n=32A033023