Properties of the Number -8210

Two Hundred Ten

Basics

Value: -8211 → -8210 → -8209

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 821

Divisors: 1, 2, 5, 10, 821, 1642, 4105, 8210

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000000010010

Octal: -20022

Duodecimal: -4902

Hexadecimal: -2012

Square: 67404100

Square Root: 90.60905032059435

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

a(n) = prime(n+1)² + prime(n)². A69484

T(n,k)=Number of 0..k arrays x(0..n+1) of n+2 elements without any two consecutive increases or two consecutive decreases. A200838

Largest value in trajectory of n under the juggler map of A094683. A94716

Squarefree numbers n for which A019565(n) < n and A048675(n) is also squarefree. A285319

Vertex number of a square spiral in which the length of the first two edges are the legs of the primitive Pythagorean triple [21, 20, 29]. The edges of the spiral have length A195033. A195034

Triangle read by rows: T(n, k) = n! * 2^k * hypergeom([-k], [-n], -1/2). A374427

a(n) = n*(2·n² + n + 1)/2. A85786

Numbers k such that both k and the k-th prime have nonincreasing digits. A116067

Number of partitions p of n such that if h = 2·min(p), then h is an (h,0)-separator of p; see Comments. A239511

a(0) = 0, a(1) = 1, for n > 1, a(n) = a(n-1) + a(n-A002487(n)). A283474