Properties of the Number 12845

Twelve Thousand Eight Hundred Forty-Five

Basics

Value: 12844 → 12845 → 12846

Parity: odd

Prime: No

Previous Prime: 12841

Next Prime: 12853

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 × 367

Divisors: 1, 5, 7, 35, 367, 1835, 2569, 12845

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001000101101

Octal: 31055

Duodecimal: 7525

Hexadecimal: 322d

Square: 164994025

Square Root: 113.33578428722325

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

Positive integers whose square is the sum of 50 consecutive squares. A257781

Numbers k such that k![4] + 2 is prime, where k![4] = A007662(k) = quadruple factorial. A283553

a(n) = T(n,n-6), array T as in A055801. A55806

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A140049. A379168

4-dimensional analog of centered polygonal numbers. A6323

a(n) = 338·n + 1. A158000

Number of irredundant sets in the n X n white bishop graph. A290712

Triangle read by rows: T(n,m) = number of m-block proper T₀-covers (without empty blocks and without multiple blocks) of a labeled n-set (n>=2, 2<=m<=2ⁿ-2). A95422

a(n) = 676·n + 1. A158386

a(n) = 76·n² + 1. A158767