2732
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4788
- Proper Divisor Sum (Aliquot Sum)
- 2056
- 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
- 1364
- Möbius Function
- 0
- Radical
- 1366
- 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
- 40
- 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 restricted 3 X 3 matrices with row and column sums n.at n=31A005045
- Coordination sequence T3 for Zeolite Code EMT.at n=43A008088
- Coordination sequence T4 for Zeolite Code EMT.at n=43A008089
- Coordination sequence T3 for Zeolite Code HEU.at n=34A008118
- Coordination sequence T1 for Zeolite Code NAT.at n=35A008203
- If a, b in sequence, so is ab+4.at n=43A009303
- a(n) = a(n-4) + a(n-5), with a(0)=1, a(1)=a(2)=a(3)=0, a(4)=1.at n=61A017827
- Numbers k such that the continued fraction for sqrt(k) has period 36.at n=32A020375
- Number of distinct quadratic residues mod 2^n.at n=14A023105
- Numbers k such that Fibonacci(k) == -3 (mod k).at n=39A023164
- a(n) = position of the n-th n in A026400.at n=48A026403
- T(2n,n+4), T given by A026780.at n=4A026897
- 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=24A031524
- Numbers k such that 97*2^k+1 is prime.at n=10A032398
- Concatenation of n and n + 5 or {n,n+5}.at n=26A032610
- Number of free orthoplex n-ominoes with cell centers determining n-2 space.at n=7A036367
- Number of distinct quadratic residues mod 4^n.at n=7A039301
- Numbers whose base-2 representation has exactly 10 runs.at n=36A043577
- Numbers n such that number of runs in the base 2 representation of n is congruent to 0 mod 10.at n=36A043763
- Numbers k such that the string 6,5 occurs in the base 9 representation of k but not of k-1.at n=37A044310