Properties of the Number 28857

Twenty-Eight Thousand Eight Hundred Fifty-Seven

Basics

Value: 28856 → 28857 → 28858

Parity: odd

Prime: No

Previous Prime: 28843

Next Prime: 28859

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 9619

Divisors: 1, 3, 9619, 28857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000010111001

Octal: 70271

Duodecimal: 14849

Hexadecimal: 70b9

Square: 832726449

Square Root: 169.8734823331764

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

Expansion of (1/x) * Series_Reversion( x * (1-x) * (1-x+x³)² ). A368974

G.f. A(x) satisfies: A(x) = 1 + x·A(x)² / (A(x) - 4·x*A'(x)). A352238

Number of prime unlabeled connected topologies (i.e., prime connected homeomorphism classes) on n points. A28857