Properties of the Number -13486

Thirteen Thousand Four Hundred Eighty-Six

Basics

Value: -13487 → -13486 → -13485

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 11 × 613

Divisors: 1, 2, 11, 22, 613, 1226, 6743, 13486

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11010010101110

Octal: -32256

Duodecimal: -797A

Hexadecimal: -34ae

Square: 181872196

Square Root: 116.1292383510716

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

Square spiral of sums of selected preceding terms, starting at 1. A141481

a(n) = 1 + n*(n+1)*(n-1)/2. A158842

Expansion of (x-1)²/(1-x²-2·x³). A159286

Ulam's spiral (WNW spoke). A143859

G.f. satisfies: A(x)² = A( x²/(1-4·x)² ). A260650

Number of integer solutions (a₁, a₂, ... , a₈) to the equation a₁² + 2·a₂² + ... + 8·a₈² = 3·n. A320243

Even numbers k such that A103230(k) is a perfect square. A332531

Centered 29-gonal numbers. A389798

a(n)=(F(n)-sumofdigits(F(n)))/9, where F(n) = A000045(n). A181065

Number of -4..4 arrays x(i) of n+1 elements i=1..n+1 with x(i)+x(j), x(i+1)+x(j+1), -(x(i)+x(j+1)), and -(x(i+1)+x(j)) having three distinct values for every i<=n and j<=n. A211687