Properties of the Number 18823

Eighteen Thousand Eight Hundred Twenty-Three

Basics

Value: 18822 → 18823 → 18824

Parity: odd

Prime: No

Previous Prime: 18803

Next Prime: 18839

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 2689

Divisors: 1, 7, 2689, 18823

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100110000111

Octal: 44607

Duodecimal: AA87

Hexadecimal: 4987

Square: 354305329

Square Root: 137.19693874135822

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

Number of series-reduced free pure symmetric identity multifunctions (with empty expressions allowed) with one atom and n positions. A317880

Array read by rows: T(n,k) is the number of directed multigraphs with loops with n arcs, k vertices, and no vertex of degree 0. A136564

Maximum length of a finite snake in the Snake Number Problem with n-periodic instructions in an infinite square grid (see Comments). A353176

Indices of products of twin primes in the semiprimes. A131188

Numbers that can be written as a² + 3·b² for some a, b in A155716 and also as c² + 6·d² for some c, d in A092572. A380295

n is the sum of k nonzero squares for all 4 <= k <= n-14. A18823