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Properties of the Number 28863

Twenty-Eight Thousand Eight Hundred Sixty-Three

Basics

Value: 28862 → 28863 → 28864

Parity: odd

Prime: No

Previous Prime: 28859

Next Prime: 28867

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 3 × 1069

Divisors: 1, 3, 9, 27, 1069, 3207, 9621, 28863

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000010111111

Octal: 70277

Duodecimal: 14853

Hexadecimal: 70bf

Square: 833072769

Square Root: 169.89114161721324

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

Consider n equally spaced points along a line and join every pair of points by a semicircle above the line; a(n) is the number of intersection points. A290447
Number of positive special sums of integer partitions of n. A301854
Number of distinct terms in row n of Stern's diatomic array, A049456. A293160
Duplicate of A293160. A294443
Number of ways to choose a rooted partition of each part in a strict rooted partition of n. A301751
Expansion of -(4·x3+8·x2+4·x+1)/(2·x4+4·x3+2·x2-x-1). A270307
a(n) = ∑k=0..n σ(k2 + 1), where σ(k) is the sum of divisors of k (A000203). A333172
[ cos(Fibonacci(n)) ]. A28863