Properties of the Number 27080

Twenty-Seven Thousand Eighty

Basics

Value: 27079 → 27080 → 27081

Parity: even

Prime: No

Previous Prime: 27077

Next Prime: 27091

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 × 677

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 677, 1354

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100111001000

Octal: 64710

Duodecimal: 13808

Hexadecimal: 69c8

Square: 733326400

Square Root: 164.5600194457937

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

T(n,k) is the number of (n+1) X (k+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235186

Numbers n such that prime(n) + reversal(prime(n)) is a square. A227371

Erroneous version of A108808. A131359

Number of defective 4-colorings of an n X 6 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order. A229576

Number of (n+1) X (2+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235180

Number of (n+1) X (6+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235184

a(n) = floor(10000·log(n)). A4243

Multiplications between idempotent equivalence classes for n X n matrices over GF(2). A285053

T(n,k) = number of defective 4-colorings of an n X k 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order. A229578

a(n) = ∑_k=0..2n-2 T(n,k) * T(n,k+2), with T given by A027052. A27080