1773
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 2574
- Proper Divisor Sum (Aliquot Sum)
- 801
- 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
- 1176
- Möbius Function
- 0
- Radical
- 591
- 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
- 55
- 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
- no
- Odd
- yes
Appears in sequences
- The coding-theoretic function A(n,4,4).at n=32A001843
- a(n) = n^2 + prime(n).at n=39A004232
- Coordination sequence T1 for Zeolite Code AWW.at n=30A008045
- Coordination sequence T4 for Zeolite Code MOR.at n=27A008185
- Coordination sequence T4 for Zeolite Code MTT.at n=26A008192
- Coordination sequence T2 for Zeolite Code MTW.at n=27A008197
- Year of birth of n-th President of U.S.A.at n=8A008745
- Positive integers n such that 2^n (mod n) == 2^9 (mod n).at n=73A015931
- Numbers n such that n is a substring of its square when both are written in base 2.at n=31A018826
- a(n) = n*(11*n - 1)/2.at n=18A022268
- Sum of digits in n-th term of A022470.at n=23A022475
- Numbers k such that Fib(k) == -34 (mod k).at n=17A023169
- Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026692.at n=9A026701
- Coordination sequence T2 for Zeolite Code CGS.at n=31A027366
- Sequence satisfies T(a)=a, where T is defined below.at n=39A027597
- Numbers k that divide the (left) concatenation of all numbers <= k written in base 22 (most significant digit on left).at n=12A029491
- Numbers having period-14 7-digitized sequences.at n=35A031205
- "AFK" (ordered, size, unlabeled) transform of 1,2,3,4,...at n=11A032007
- Every run of digits of n in base 8 has length 2.at n=25A033006
- Numbers whose base-8 expansion has no run of digits with length < 2.at n=35A033021