Properties of the Number 18095

Eighteen Thousand Ninety-Five

Basics

Value: 18094 → 18095 → 18096

Parity: odd

Prime: No

Previous Prime: 18089

Next Prime: 18097

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 7 × 11 × 47

Divisors: 1, 5, 7, 11, 35, 47, 55, 77, 235, 329

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011010101111

Octal: 43257

Duodecimal: A57B

Hexadecimal: 46af

Square: 327429025

Square Root: 134.51765683359193

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

Lucas-Carmichael numbers: squarefree composite numbers k such that p | k => p+1 | k+1. A6972

Numbers k such that k and k+1 have 4 distinct prime factors. A140078

Lucas-Carmichael numbers with 4 prime factors. A216926

Total number of congruence subgroups of PSL(2,Z) of genus n. A258691

Numbers k such that k and k+1 each have at least 4 distinct prime factors. A321504

Pentagonal numbers (A000326) which are the sum of 2 other positive pentagonal numbers. A136117

Maximum number of induced copies of the claw graph K_1,3 in an n-node graph. A352666

Least pentagonal number P(m) > P(n) such that P(m)+P(n) is again a pentagonal number, 0 if no such m exists. A136114

Colombian numbers that are also Bogotá numbers. A336984

Sum of 1-fibits in Zeckendorf-expansion A014417(p) summed for all primes p in range [Fib(n+1),Fib(n+2)[ (where Fib = A000045). A95353