Properties of the Number 12810

Twelve Thousand Eight Hundred Ten

Basics

Value: 12809 → 12810 → 12811

Parity: even

Prime: No

Previous Prime: 12809

Next Prime: 12821

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 61

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001000001010

Octal: 31012

Duodecimal: 74B6

Hexadecimal: 320a

Square: 164096100

Square Root: 113.18127053536729

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

Nonzero coefficients of the Swiss-Knife polynomials for the computation of Euler, tangent, and Bernoulli numbers (triangle read by rows). A153641

Triangle read by rows, T(n,k) = binomial(n,k)*A000111(n-k), 0 <= k <= n. A109449

Products of exactly 5 distinct primes. A46387

Exponential Riordan array (sech(x),x). A119879

Triangle, read by rows, of numbers T(n,k), 0 <= k <= n, given by T(n,k) = A000364(n-k)*binomial(2·n, 2·k). A86646

Numbers k for which nontrivial positive magic squares of exactly 9 different orders with magic sum k exist. For a definition of nontrivial positive magic squares, see A125005. A125016

Triangle read by rows: matrix 5th power of the Stirling-1 triangle A008275. A39817

Triangle read by rows: T(n, k) = (-2)^k*binomial(n, k)*Euler(k, 1/2). A81658

Numbers n such that smallest number not dividing n² (A236454) is different from smallest prime not dividing n (A053669). A235921

Sum of digits of n-th term in Look and Say sequence A005150. A4977