Properties of the Number -216900

Two Hundred Sixteen Thousand Nine Hundred

Basics

Value: -216901 → -216900 → -216899

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 ² × 241

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100111101000100

Octal: -647504

Duodecimal: -A5630

Hexadecimal: -34f44

Square: 47045610000

Square Root: 465.72524088780074

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

The number of regions formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter. A358782

Numbers m such that ∑_i=1..k (1-1/p_i) + ∏_i=1..k (1-1/p_i) is an integer, where p_i are the k prime factors of m (with multiplicity). A198391

Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of regions in G_n. A370976