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Properties of the Number 28586

Twenty-Eight Thousand Five Hundred Eighty-Six

Basics

Value: 28585 → 28586 → 28587

Parity: even

Prime: No

Previous Prime: 28579

Next Prime: 28591

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 14293

Divisors: 1, 2, 14293, 28586

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111110101010

Octal: 67652

Duodecimal: 14662

Hexadecimal: 6faa

Square: 817159396

Square Root: 169.07394831847986

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

Triangle read by rows: T(n,k) is the number of non-equivalent regular polygons with n+1 edges, one of which is rooted, which are dissected by non-intersecting diagonals into k regions, such that two such polygons are identified up to reflection along the rooted edge and twisting along the diagonals that does not affect the root edge (for 1 <= k <= n-1 and n >= 2). A232206
a(n) = ∑d∣n d2 * (d+1)/2. A278403
Number of partitions of (3, n) into a sum of distinct pairs. A268346
Number of basis partitions of n+36 with Durfee square size 6. A53801
Number of basic blocks of size 5xn for tilings with square tiles of size up to 5 X 5. A54858
Number of canonical forms for separation coordinates on hyperspheres Sn, ordered by increasing number of independent continuous parameters. A295380
a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 3 - 2p+1 and p is the unique integer such that 2p < n - 1 <= 2p+1, starting with a(1) = 1, a(2) = 2, and a(3) = 1. A49948
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 2 ones in any 3 X 3 X 3 subtriangle. A153912
θ series of lattice with Gram matrix [2 1; 1 3]. A28586