Properties of the Number 26843

Twenty-Six Thousand Eight Hundred Forty-Three

Basics

Value: 26842 → 26843 → 26844

Parity: odd

Prime: No

Previous Prime: 26839

Next Prime: 26849

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 17 × 1579

Divisors: 1, 17, 1579, 26843

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110100011011011

Octal: 64333

Duodecimal: 1364B

Hexadecimal: 68db

Square: 720546649

Square Root: 163.83833495247686

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

Irregular triangle read by rows: T(n,k) is the number of regions between the free polyominoes, with n cells and width k, and their bounding boxes, n >= 1, 1 <= k <= ceiling(n/2). A380283

a(0)=3; thereafter, a(n) = A002426(n+1) + Fibonacci(n-1)*(Fibonacci(n-1) + 1). A59728

a(n) = T(2n,n+3), T given by A026725. A26843

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299717