Properties of the Number 18236

Eighteen Thousand Two Hundred Thirty-Six

Basics

Value: 18235 → 18236 → 18237

Parity: even

Prime: No

Previous Prime: 18233

Next Prime: 18251

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 47 × 97

Divisors: 1, 2, 4, 47, 94, 97, 188, 194, 388, 4559

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011100111100

Octal: 43474

Duodecimal: A678

Hexadecimal: 473c

Square: 332551696

Square Root: 135.04073459515837

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

Second partial sums of fifth powers (A000584). A101092

Number of labeled T₀-hypergraphs with n distinct hyperedges (empty hyperedge included). A59086

a(n) = 1·6ⁿ + 2·5ⁿ + 3·4ⁿ + 4·3ⁿ + 5·2ⁿ + 6·1ⁿ. A254144

Number of even-length columns in all bargraphs having semiperimeter n (n>=2). A273904

Least common multiple of prime(n)-3 and prime(n)+3. A166011

Indices of primes that are the sum of two Fibonacci numbers. A178971

Expansion of e.g.f. exp(x - 5·x²/2). A362279

Irregular triangle read by rows: row n lists the rank sizes of the "electrical" poset EP_n of circular planar graphs with n boundary vertices. A232967

Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically. A253695

Numbers k such that R_k + 20 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A256722