1788
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4200
- Proper Divisor Sum (Aliquot Sum)
- 2412
- 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
- 592
- Möbius Function
- 0
- Radical
- 894
- Omega Function (Ω)
- 4
- 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
- 99
- 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
- Smallest number requiring n chisel strokes for its representation in Roman numerals.at n=23A002964
- Number of unlabeled Hamiltonian circuits on n-octahedron (cross polytope); also number of circular chord diagrams with n chords, modulo symmetries.at n=6A003437
- Numbers n such that n! has a square number of digits.at n=33A006488
- a(n) is the smallest positive number such that the sum of A001032(n) consecutive squares starting with a(n)^2 is a square.at n=36A007475
- Coordination sequence T3 for Zeolite Code AFR.at n=32A008021
- Coordination sequence T1 for Zeolite Code APD.at n=28A008034
- Coordination sequence T3 for Zeolite Code EUO.at n=26A008098
- Coordination sequence T1 for Zeolite Code FER.at n=26A008106
- Coordination sequence T2 for Zeolite Code MFI.at n=27A008165
- Coordination sequence T5 for Zeolite Code MTW.at n=28A008200
- Number of 3 X 3 symmetric stochastic matrices under row and column permutations.at n=47A008764
- Numbers k such that C(k,3) = C(x,3) + C(y,3) is solvable.at n=44A010330
- Powers of sqrt(20) rounded down.at n=5A017964
- Powers of fourth root of 20 rounded down.at n=10A018102
- Number of lines through exactly 8 points of an n X n grid of points.at n=49A018815
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite CLO = Cloverite starting with a T5 atom.at n=5A018999
- Fibonacci sequence beginning 5, 17.at n=11A022141
- Length of n-th term of A022470.at n=25A022471
- a(n) = (d(n)-r(n))/5, where d = A026049 and r is the periodic sequence with fundamental period (4,1,4,0,1).at n=25A026051
- dot_product(n,n-1,...2,1)*(7,8,...,n,1,2,3,4,5,6).at n=11A026066