Properties of the Number 18455

Eighteen Thousand Four Hundred Fifty-Five

Basics

Value: 18454 → 18455 → 18456

Parity: odd

Prime: No

Previous Prime: 18451

Next Prime: 18457

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 3691

Divisors: 1, 5, 3691, 18455

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100000010111

Octal: 44027

Duodecimal: A81B

Hexadecimal: 4817

Square: 340587025

Square Root: 135.84918107960755

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

Values of n such that L(20) and N(20) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227523

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 131", based on the 5-celled von Neumann neighborhood. A270223

a(n) is the number of square tiles in ring n (n >= 0) symmetric about a vertex of the hyperbolic regular tiling with Schläfli symbol {4,5}. A390190

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (1, -1, 0), (1, 1, -1), (1, 1, 1)}. A149614

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 5. A241650

Triangle T(n, k) = k^n-k + (n-k)^k with T(0, 0) = 1, read by rows. A156354

Divisors of 436. A18455