Properties of the Number 28676

Twenty-Eight Thousand Six Hundred Seventy-Six

Basics

Value: 28675 → 28676 → 28677

Parity: even

Prime: No

Previous Prime: 28669

Next Prime: 28687

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 67 × 107

Divisors: 1, 2, 4, 67, 107, 134, 214, 268, 428, 7169

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000000000100

Octal: 70004

Duodecimal: 14718

Hexadecimal: 7004

Square: 822312976

Square Root: 169.33989488599548

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

Numbers k such that σ(k) = σ(k+8). A15876

Number of polyominoes of n cells with both diagonal symmetries, for which the 180-degree rotational symmetry has an axis that coincides with the center of a square, but without 90-degree rotational symmetry. A351159

Indices of primes in A000712. A285217

Partial sums of A006950. A233969

Indices of 0 in A348295: numbers m such that ∑_k=1..m (-1)^{floor(k*(sqrt(2}-1))) = ∑_k=1..m (-1)^A097508(k) = 0. A348299

Expansion of e.g.f. exp((g⁴ - 1)/4), where g = 1+x·g² is the g.f. of A000108. A391555

Positions of 4-digit terms in the continued fraction for π (3 is at position 0). A48959

Number of (n+2) X 6 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order. A204750

a(n) = Fibonacci(n+2) + n - 2. A255875

a(n) is the least number k such that the sequence of elements of the continued fraction of the harmonic mean of the divisors of k is palindromic with length n, or -1 if no such k exists. A349478