Properties of the Number 28810

Twenty-Eight Thousand Eight Hundred Ten

Basics

Value: 28809 → 28810 → 28811

Parity: even

Prime: No

Previous Prime: 28807

Next Prime: 28813

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 43 × 67

Divisors: 1, 2, 5, 10, 43, 67, 86, 134, 215, 335

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000010001010

Octal: 70212

Duodecimal: 1480A

Hexadecimal: 708a

Square: 830016100

Square Root: 169.73508771023157

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

Let Do(n) = A006566(n) = n-th dodecahedral number. Consider all integer triples (i,j,k), j >= k > 0, with Do(i) = Do(j) + Do(k), ordered by increasing i; sequence gives k values. A53019

Triangle read by rows: T(n,w) is the number of n-step self avoiding walks on a 3D cubic lattice confined inside a tube of cross section 2w X 2w where the walk starts at the center of the tube's side. A337401

Sum of the asymmetry degrees of all compositions of n with parts in {1,5}. A276065

p-INVERT of (1,0,0,0,1,0,0,0,0,0,...), where p(S) = (1 - S)². A292325

G.f. A(x) satisfies: A(x) = x·exp(2 * ∑_k>=1 (-1)^k+1 * A(x^k)² / (k·x^k) ). A363390

Numbers n such that σ(n) = 2*(n-reversal(n)). A135242

Nonsquares mod 97. A28810