Properties of the Number 18603

Eighteen Thousand Six Hundred Three

Basics

Value: 18602 → 18603 → 18604

Parity: odd

Prime: No

Previous Prime: 18593

Next Prime: 18617

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 13 × 53

Divisors: 1, 3, 9, 13, 27, 39, 53, 117, 159, 351

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100010101011

Octal: 44253

Duodecimal: A923

Hexadecimal: 48ab

Square: 346071609

Square Root: 136.39281506003167

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) is both the sum of n+1 consecutive integers and the sum of the n immediately higher consecutive integers. A59270

a(n) = n*(2·n + 1)*(4·n + 1). A316224

(1/4) * number of ways to select 3 distinct points forming a triangle of unsigned area = n/2 from a square of grid points with side length n. A320310

Number of 2 X 2 nonsingular 0..n matrices with rows in increasing order. A183761

Hankel transform of number of divisors sequence (A000005). A56225

13 times hexagonal numbers: a(n) = 13·n*(2·n-1). A194713

Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X 2 array. A219680

Number of nX4 0..1 arrays with every element unequal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero. A303804

Orders of non-cyclic simple groups (divided by 4). A8976

Numbers k that divide s(k), where s(1)=1, s(j)=13·s(j-1)+j. A14861