Properties of the Number 18316

Eighteen Thousand Three Hundred Sixteen

Basics

Value: 18315 → 18316 → 18317

Parity: even

Prime: No

Previous Prime: 18313

Next Prime: 18329

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 19 × 241

Divisors: 1, 2, 4, 19, 38, 76, 241, 482, 964, 4579

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011110001100

Octal: 43614

Duodecimal: A724

Hexadecimal: 478c

Square: 335475856

Square Root: 135.33661736573734

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

a(n) = (n³ + 2·n)/3. A6527

Number of degree-n even permutations of order dividing 2. A704

28-gonal numbers: a(n) = n*(13·n - 12). A161935

a(n) = first term which reduces to an unchanging value in n steps via repeated interpretation of a(n) as a base b+1 number where b is the largest digit of a(n). A91049

One third of product plus sum of three consecutive nonnegative integers; a(n)=(n+1)(n²+2n+3)/3. A167875

Engel expansion of the golden ratio, (1 + sqrt(5))/2 = 1.61803... . A28259

Sum of the first moments of all partitions of n with weights starting at 0. A66185

G.f.: q-sinh(x) evaluated at q=-x. A198202

Number of rectangular plane partitions of n with no repeated rows or columns. A323435

Array read by antidiagonals: A(n,k) is the number of achiral planar maps with n vertices and k faces, n >= 1, k >= 1. A379431