Properties of the Number -27684

Twenty-Seven Thousand Six Hundred Eighty-Four

Basics

Value: -27685 → -27684 → -27683

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 769

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 769

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -110110000100100

Octal: -66044

Duodecimal: -14030

Hexadecimal: -6c24

Square: 766403856

Square Root: 166.38509548634457

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)=Number of nXk 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once. A269194

a(n) = T(n,n-5), array T as in A055801. A55805

a(n) = 1458·n - 18. A157508

a(n) = T(n, 2·n-5), T given by A027926. A27928

Numbers k such that the reversal of σ*(k) equals the sum of the reversals of the anti-divisors of k, where σ*(k) is the sum of the anti-divisors of k. A203616

Number of n X n arrays of squares of integers summing to 5 with every element equal to at least one neighbor. A146124

Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..3 array extended with zeros and convolved with 1,1,1. A222433

Number of n X 2 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once. A269188

Number of nX5 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once. A269191

Numbers k such that Bernoulli number B_k has denominator 1919190. A295595