Properties of the Number 18866

Eighteen Thousand Eight Hundred Sixty-Six

Basics

Value: 18865 → 18866 → 18867

Parity: even

Prime: No

Previous Prime: 18859

Next Prime: 18869

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 9433

Divisors: 1, 2, 9433, 18866

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100110110010

Octal: 44662

Duodecimal: AB02

Hexadecimal: 49b2

Square: 355925956

Square Root: 137.35355838128112

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 trimmed trees with n nodes. A2988

Numbers that are the sum of six fourth powers in four or more ways. A345561

Numbers that are the sum of six fourth powers in five or more ways. A345562

Numbers that are the sum of six fourth powers in exactly five ways. A345817

Maximal length of rook tour on an n X n+1 board. A152132

Maximal length of rook tour on an n X n+3 board. A152134

G.f. A(x) defined by: A(x)⁴ consists entirely of integer coefficients between 1 and 4 (A083954); A(x) is the unique power series solution with A(0)=1. A84204

Number of rooted planar n-trees whose number of leaves is equal to 1 modulo 3. A119366

Number of rooted planar n-trees whose number of leaves is equal to 2 modulo 3. A119367

Number of compositions (ordered partitions) of n into at most 6 prime parts (counting 1 as a prime). A347761