Properties of the Number 28206

Twenty-Eight Thousand Two Hundred Six

Basics

Value: 28205 → 28206 → 28207

Parity: even

Prime: No

Previous Prime: 28201

Next Prime: 28211

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 1567

Divisors: 1, 2, 3, 6, 9, 18, 1567, 3134, 4701, 9402

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111000101110

Octal: 67056

Duodecimal: 143A6

Hexadecimal: 6e2e

Square: 795578436

Square Root: 167.94642002734085

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 partitions of n-th triangular number (A000217) into distinct triangular parts. A288126

Numbers k such that k⁴ has k as a substring of its decimal expansion. A75904

n/3 analog of Keith numbers. A282767

Number of binary strings of length n with no substrings equal to 0001, 0110, or 0111. A164476

Number of bracelets of length n using exactly two different colored beads. A56342

Moebius transform of Fibonacci numbers. A7436

Triangle T(n,k) = 1 - A176337(k) - A176337(n-k) + A176337(n) read by rows. A176339

Number of partitions of 1 into distinct fractions i/j with 1<=i<j<=n and i,j coprime. A116084

First differences of A116084. A116085

Expansion of 1/((1-6x)(1-7x)(1-9x)(1-12x)). A28206