2183
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
- 4
- Divisor Sum
- 2280
- Proper Divisor Sum (Aliquot Sum)
- 97
- 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
- 2088
- Möbius Function
- 1
- Radical
- 2183
- Omega Function (Ω)
- 2
- 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
- 138
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- 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
- Numbers k such that the k-th tetrahedral number is the sum of 2 tetrahedral numbers.at n=47A002311
- Numbers of terms in expressions for coefficients of "Lovelock Lagrangians" (or "Gauss-Bonnet forms") in terms of Riemann-Christoffel curvature tensor and two of its contractions (viz., the Ricci curvature tensor and the Riemann curvature scalar) for n-dimensional differentiable manifolds having a general linear connection.at n=7A006372
- Number of 5-tuples of different integers from [ 2,n ] with no common factors among pairs.at n=26A015699
- Numbers with exactly 6 2's in their ternary expansion.at n=11A023704
- Numbers k such that k^2+k+2 is a palindrome.at n=20A027712
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 11 ones.at n=2A031779
- a(n) = floor(n^3 / Pi).at n=19A032633
- Zeckendorf expansion of n: repeatedly subtract the largest Fibonacci number you can until nothing remains. Big-endian concatenation of decimals.at n=32A035514
- Number of partitions of n with equal nonzero number of parts congruent to each of 1 and 2 (mod 4).at n=38A035549
- Number of partitions of n with equal number of parts congruent to each of 0, 3 and 4 (mod 5).at n=40A035577
- Number of partitions of n into parts not of the form 25k, 25k+11 or 25k-11. Also number of partitions with at most 10 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=25A036010
- Number of partitions of n such that cn(0,5) = cn(2,5) <= cn(1,5) = cn(3,5) = cn(4,5).at n=65A036855
- Number of partitions of n such that cn(0,5) = cn(2,5) < cn(1,5) = cn(3,5) = cn(4,5).at n=65A036857
- Coordination sequence T15 for Zeolite Code STT.at n=31A038427
- Numbers n such that string 0,7 occurs in the base 8 representation of n but not of n-1.at n=37A044194
- Numbers k such that the string 8,5 occurs in the base 9 representation of k but not of k-1.at n=29A044328
- Numbers n such that string 8,3 occurs in the base 10 representation of n but not of n-1.at n=23A044415
- Numbers n such that string 0,7 occurs in the base 8 representation of n but not of n+1.at n=37A044575
- Numbers n such that string 2,0 occurs in the base 8 representation of n but not of n+1.at n=38A044584
- Numbers n such that string 8,5 occurs in the base 9 representation of n but not of n+1.at n=29A044709