Properties of the Number 20892

Twenty Thousand Eight Hundred Ninety-Two

Basics

Value: 20891 → 20892 → 20893

Parity: even

Prime: No

Previous Prime: 20887

Next Prime: 20897

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 1741

Divisors: 1, 2, 3, 4, 6, 12, 1741, 3482, 5223, 6964

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000110011100

Octal: 50634

Duodecimal: 10110

Hexadecimal: 519c

Square: 436475664

Square Root: 144.54065172123723

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

Convolution triangle of A000129(n) (Pell numbers). A54456

Self-convolution of Pell numbers (A000129). A6645

Cluster series for hexagonal lattice. A3202

Sums of distinct powers of 12. A33048

Sums of 3 distinct powers of 12. A38493

Low temperature antiferromagnetic susceptibility for honeycomb lattice. A7214

Triangle of partial row sums of triangle A054446(n,m), n >= m >= 0. A54448

Number of nondecreasing integer sequences of length 13 with sum zero and sum of absolute values 2n. A158147

Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357". A295708

G.f. A(x) satisfies: A(x) = ∏_k>=1 ((1 + x^k*A(x)^k)/(1 - x^k*A(x)^k))^k. A301625