Properties of the Number 20274

Twenty Thousand Two Hundred Seventy-Four

Basics

Value: 20273 → 20274 → 20275

Parity: even

Prime: No

Previous Prime: 20269

Next Prime: 20287

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 31 × 109

Divisors: 1, 2, 3, 6, 31, 62, 93, 109, 186, 218

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111100110010

Octal: 47462

Duodecimal: B896

Hexadecimal: 4f32

Square: 411035076

Square Root: 142.38679714074615

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

G.f. satisfies: A(x) = Series_Reversion(x - x³*A'(x)). A360976

Numbers k such that binomial(3k, k) + 1 is prime. A125221

a(n) = p(n)*p(n+2)-p(n+1), where p(n) is the n-th prime. A152530

a(n) = ∑_i=0..n digsum₅(i)⁴, where digsum₅(i) = A053824(i). A231671

T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A280313

Constant term of the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192967

a(n) = ∑_{i,j,k in Z and i² + j² + k² <= n} i² + j² + k². A14203

Fibonacci sequence beginning 2, 32. A22378

Integers n such that 2n²+1, 2n³+1 and 2n⁴+1 are prime. A239920

Number of 2n-node unlabeled rooted trees with thinning limbs and root outdegree (branching factor) n. A244712