Properties of the Number 11857

Eleven Thousand Eight Hundred Fifty-Seven

Basics

Value: 11856 → 11857 → 11858

Parity: odd

Prime: No

Previous Prime: 11839

Next Prime: 11863

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 71 × 167

Divisors: 1, 71, 167, 11857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111001010001

Octal: 27121

Duodecimal: 6A41

Hexadecimal: 2e51

Square: 140588449

Square Root: 108.8898526034451

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

Centered 16-gonal numbers. A69129

Numbers whose multiset multisystem (A302242) is crossing. A324170

T(n,k)=Number of lower triangles of an (n+2k-2)X(n+2k-2) 0..k array with new values introduced in row major order 0..k and no element unequal to more than one horizontal or vertical neighbor. A194778

a(n) = 4·a(n-2) - 4·a(n-4) + 25·a(n-6). A107248

Partial sums of A151779. A151781

The number of different classes of 2-dimensional convex lattice polytopes having volume n/2 up to unimodular equivalence. A187015

Numbers which need ten 'Reverse and Add' steps to reach a palindrome. A65215

Numbers k such that 19 is the largest prime factor of k² - 1. A181453

a(n) = prime(n) * prime(2·n-1). A219603

Number of partitions p of n such that m(p) < m(c(p)), where m = maximal multiplicity of parts, and c = conjugate. A240726