Properties of the Number 18748

Eighteen Thousand Seven Hundred Forty-Eight

Basics

Value: 18747 → 18748 → 18749

Parity: even

Prime: No

Previous Prime: 18743

Next Prime: 18749

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 43 × 109

Divisors: 1, 2, 4, 43, 86, 109, 172, 218, 436, 4687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100100111100

Octal: 44474

Duodecimal: AA24

Hexadecimal: 493c

Square: 351487504

Square Root: 136.92333621410194

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 integer partitions of n whose distinct parts have integer mean. A360241

Base-5 Keith numbers. A187713

Number of clusters with n vertices, n-1 edges and zero contacts on the simple cubic lattice. A118356

Number of palindromes (in base 5) below 5ⁿ. A117864

Partial sums of floor(Fibonacci(n)/4). A179006

Number of 2 X n binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once. A269076

Numbers having four 4's in base 8. A43440

Even numbers k such that if a person is born in year k and lives not more than 100 years, then he never celebrates his prime birthday on a prime year. A124658

Numbers n, not divisible by 3, 5, 7 or 11, such that A000203(n)-n-1 and 2·n+1-A000203(n) are prime numbers. A180268

Ordered perimeters p of primitive Pythagorean triangles no side of which is squarefree. A329392