Properties of the Number 86800

Eighty-Six Thousand Eight Hundred

Basics

Value: 86799 → 86800 → 86801

Parity: even

Prime: No

Previous Prime: 86783

Next Prime: 86813

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 5 ² × 7 × 31

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101001100010000

Octal: 251420

Duodecimal: 42294

Hexadecimal: 15310

Square: 7534240000

Square Root: 294.6183972531247

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 regions in regular n-gon with all diagonals drawn. A7678

a(n) = n*(n-1)*(n-2)*(n+3)/12. A117662

T(n,k) is the number of n X k 0..n·k-1 arrays with upper left zero and lower right n·k-1 and each element differing from its horizontal and diagonal neighbors by a power of two. A265619

Numbers whose sum of divisors is the square of one of their divisors. A303123

Numbers k such that σ(k) divides k². A90777

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock. A236354

Number of exterior points formed by extending diagonals of n-gon in general position. A5701

Number of 3 X 3 symmetric matrices over Z(n) having determinant 1. A115224

Number of scalars which can be constructed from the Riemann tensor and metric tensor in n dimensions. A50297

Triangle T(n,k)=number of forests of labeled rooted trees of height at most 1, with n labels and k nodes, where any root may contain >= 1 labels, n >= 0, 0<=k<=n. A143397