Properties of the Number -2206

Two Hundred Six

Basics

Value: -2207 → -2206 → -2205

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 1103

Divisors: 1, 2, 1103, 2206

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -100010011110

Octal: -4236

Duodecimal: -133A

Hexadecimal: -89e

Square: 4866436

Square Root: 46.968074263269514

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) = a(n-1) + a(n-2) + 1, with a(0) = 0 and a(1) = 2. A1610

Number of strict integer partitions of n such that some part can be written as a nonnegative linear combination of the others. A364839

a(n) = floor(φⁿ), where φ = (1+sqrt(5))/2 is the golden ratio. A14217

a(n) = n² - 3. A28872

Semiprimes of form prime - 1. A77065

a(n) = floor(n*φ¹⁶), where φ is the golden ratio, A001622. A4931

a(n) = 2·n² + n - 5. A100040

Number of polyhexes with 24 hexagons, C_2v symmetry and containing n carbon atoms. A123284

a(n+1) = a(n)² + 2·a(n) - 2 and a(1) = 2. A145502

a(n) = A069540(n)/5. A88407