Properties of the Number 18629

Eighteen Thousand Six Hundred Twenty-Nine

Basics

Value: 18628 → 18629 → 18630

Parity: odd

Prime: No

Previous Prime: 18617

Next Prime: 18637

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 13 × 1433

Divisors: 1, 13, 1433, 18629

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100011000101

Octal: 44305

Duodecimal: A945

Hexadecimal: 48c5

Square: 347039641

Square Root: 136.48809471891678

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

Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1). A137689

Expansion of 1 / (1 - x - x⁴ + x⁹) in powers of x. A233522

Expansion of 1/(1-x⁴-x⁵-x⁶-x⁷-x⁸). A17830

The arithmetic mean of the n-th and (n+1)-st cubes, rounded down. A147656

Expansion of 1/(1-x-x²-x³+x⁵+x⁷). A257932

Numbers whose base-5 representation contains exactly three 0's and three 4's. A45217

Number of (n+1)X(4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order. A231298

Divisors of 756. A18629