Properties of the Number 12812

Twelve Thousand Eight Hundred Twelve

Basics

Value: 12811 → 12812 → 12813

Parity: even

Prime: No

Previous Prime: 12809

Next Prime: 12821

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 3203

Divisors: 1, 2, 4, 3203, 6406, 12812

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001000001100

Octal: 31014

Duodecimal: 74B8

Hexadecimal: 320c

Square: 164147344

Square Root: 113.19010557464817

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

Expansion of ∏_k>=1 1/(1 - x^2·k+1)^k. A263150

Number of free pure symmetric identity multifunctions (with empty expressions allowed) with one atom and n positions. A317876

Theorems from propositional calculus, translated into decimal digits. A101273

Strings of 5 digits from 1...9, such that no formula using the single digits in the given order exists that evaluates to 0. A288355

G.f. A(x) satisfies A(x) = 1 + x⁵*A(x)⁵ / (1 - x·A(x)). A365702

Coordination sequence for MgNi2, Position Ni1. A9933

Monotonically increasing sequence of least positive integers, a(1)=1, such that the self-convolution produces all squares. A87150

a(n) = (d(n)-r(n))/2, where d = A026057 and r is the periodic sequence with fundamental period (0,0,1,0). A26058

a(n) = T(n,1) + T(n-1,2) + ...+ T(n-k+1,k), where k = floor((n+1)/2) and T is the array defined in A026098. A26103

Apart from two leading terms (which are present by convention), denominators of convergents to π (A002485 and A046947 give numerators). A2486