Properties of the Number 28815

Twenty-Eight Thousand Eight Hundred Fifteen

Basics

Value: 28814 → 28815 → 28816

Parity: odd

Prime: No

Previous Prime: 28813

Next Prime: 28817

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 17 × 113

Divisors: 1, 3, 5, 15, 17, 51, 85, 113, 255, 339

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000010001111

Octal: 70217

Duodecimal: 14813

Hexadecimal: 708f

Square: 830304225

Square Root: 169.7498159056439

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

Coordination sequence for (2,4,6) tiling of hyperbolic plane. A265061

Numbers M(n) which are the number of terms in the sums of consecutive cubed integers equaling a squared integer, b³ + (b+1)³ + ... + (b+M-1)³ = c², for a first term b(n) being an odd squared integer (A016754). A253707

a(n) = n*(67·n - 89)/2. A263227

Number of distinct integers of the form (xⁿ + yⁿ) mod n³. A366419

Terms of A050530 with four prime divisors. A53340

Number of (w,x,y) with all terms in {0,...,n} and x ≠ min(|w-x|, |x-y|). A213502

Numbers n such that cototient(n) does not divide φ(n!). A291597

Terms of A051488 that do not belong to A083207. A333232

a(n) = prime(n) + 1 (starting with 1). A28815

G.f. satisfies: A(x) = (1 + x·A(x)²) * (1 + x·A(x)³). A215654