Properties of the Number 28288

Twenty-Eight Thousand Two Hundred Eighty-Eight

Basics

Value: 28287 → 28288 → 28289

Parity: even

Prime: No

Previous Prime: 28283

Next Prime: 28289

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁷ × 13 × 17

Divisors: 1, 2, 4, 8, 13, 16, 17, 26, 32, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111010000000

Octal: 67200

Duodecimal: 14454

Hexadecimal: 6e80

Square: 800210944

Square Root: 168.1903683330291

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

In the interior of a regular 2n-gon with all diagonals drawn, the number of points where exactly three diagonals intersect. A101363

Numbers k for which the digital sum of k contains the same distinct digits as k itself. A249515

T(n,k)=Number of nXk 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order. A278727

Number of ways to write n as an ordered sum of 8 nonprime numbers. A341485

Number of subsets A of {0,1,...,n-1} with |A+A| < |A-A|. A222808

Expansion of ∏_k=1..12 theta₃(q^k), where theta₃() is the Jacobi θ function. A320246

Numbers with digits 2 and 8 only. A284922

a(n) = 2^n-3*(n + 3)*(2·n - 3). A59224

Numerators of reduced forms of fractions obtained by performing the first n divisions shown below. A120031

a(n) = ∑_k=1..9 floor(10ⁿ / k). A130901