Properties of the Number 20326

Twenty Thousand Three Hundred Twenty-Six

Basics

Value: 20325 → 20326 → 20327

Parity: even

Prime: No

Previous Prime: 20323

Next Prime: 20327

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 10163

Divisors: 1, 2, 10163, 20326

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111101100110

Octal: 47546

Duodecimal: B91A

Hexadecimal: 4f66

Square: 413146276

Square Root: 142.56928140381433

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers k such that σ(k) = σ(k+5). A15865

Coefficient of q¹ in ν(n), where ν(0)=1, ν(1)=b and, for n>=2, ν(n)=b*ν(n-1)+λ*(1+q+q²+...+q^n-2)*ν(n-2) with (b,λ)=(1,2). A74352

Array read by antidiagonals: T(n,k) is the number of {-1,0,1} n X k matrices with all rows and columns summing to zero up to permutations of rows. A377063

G.f.: 1 + ∑_n>=1 a(n)*xⁿ/(1 - xⁿ) = ∏_n>=1 1/(1 - n·xⁿ). A300277

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * ∑_j=0..n binomial(n+(k-1)*j,k·j)/j!. A361600

Inverse binomial transform of A002054. A35045

Triangle of coefficients of polynomials u(n,x) jointly generated with A210756; see the Formula section. A210755

Number of 4 X n 0..2 matrices with row sums n and column sums 4 up to permutations of rows. A377066

Expansion of 1/sqrt(1-4·x-8·x²+32·x³). A106184

Consecutive terms of A065966 which are also consecutive integers. A65976