Properties of the Number 28580

Twenty-Eight Thousand Five Hundred Eighty

Basics

Value: 28579 → 28580 → 28581

Parity: even

Prime: No

Previous Prime: 28579

Next Prime: 28591

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 5 × 1429

Divisors: 1, 2, 4, 5, 10, 20, 1429, 2858, 5716, 7145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 110111110100100

Octal: 67644

Duodecimal: 14658

Hexadecimal: 6fa4

Square: 816816400

Square Root: 169.0562036720333

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

Limit of number of compositions (ordered partitions) of m into distinct parts where largest part is exactly m-n, for m sufficiently large given n. A72576

n+σ(n)+σ(σ(n)) is a cube. A116013

Number of partitions of Fibonacci(n) into exactly n positive Fibonacci numbers. A319503

Number of partitions of n containing at least one part m-8 if m is the largest part. A212548

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, -1), (1, -1, 0), (1, 0, 1)}. A148610

C_n+1*C_n*C_n-1²*C_n-2⁴*...*C₂^{2^n-2}, where C_k are the Catalan numbers (A000108). A28580