Properties of the Number -6286

Two Hundred Eighty-Six

Basics

Value: -6287 → -6286 → -6285

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 7 × 449

Divisors: 1, 2, 7, 14, 449, 898, 3143, 6286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100010001110

Octal: -14216

Duodecimal: -377A

Hexadecimal: -188e

Square: 39513796

Square Root: 79.28429857165919

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

Number of compositions of n whose run-lengths are all different. A329739

Numbers k such that 2^k + 27 is prime. A157007

Expansion of e.g.f. 1 / (1 - (exp(x) - 1)³ / 3!). A346894

Triangle T, read by rows, where the matrix square T² results in shifting T right one column to drop the secondary diagonal. A152391

A monotonic doubly-fractal sequence. Erase the last (rightmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself. A127204

A(n,k) = (1/k!) * ∑_i₁=1..n ∑_i₂=1..n ... ∑_{i_k=1..n} (-1)^{i₁ + i₂ + ... + i_k} * multinomial(i₁ + i₂ + ... + i_k; i₁, i₂, ..., i_k), square array A(n,k) read by antidiagonals, for n >= 0, k >= 0. A308356

Squarefree n such that the elliptic curve n·y² = x³ - x arising in the "congruent number" problem has rank 3. A62693

Column 1 of triangle A152391. A152393

Numbers whose square is a permutational number A134640. A134742

a(n) = ∑_i=1..n ∑_j=1..n ∑_k=1..n ∑_l=1..n (-1)^i+j+k+l * (i+j+k+l)!/(4!*i!*j!*k!). A307351