Properties of the Number 28828

Twenty-Eight Thousand Eight Hundred Twenty-Eight

Basics

Value: 28827 → 28828 → 28829

Parity: even

Prime: No

Previous Prime: 28817

Next Prime: 28837

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7207

Divisors: 1, 2, 4, 7207, 14414, 28828

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000010011100

Octal: 70234

Duodecimal: 14824

Hexadecimal: 709c

Square: 831053584

Square Root: 169.7881032345906

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

T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A283634

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

Numbers with digits 2 and 8 only. A284922

Hankel transform of a(n) is A006720(n). Hankel transform of a(n+1) is A006720(n+2). A254314

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 92 ones. A31860

Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A283629

Number of 6Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A283639

Number of tilings of a 3 X 5n rectangle with 3n pentominoes of any shape. A233428

Distinct orders of elements of Conway simple group Co₃. A28828