Properties of the Number -3205

Two Hundred Five

Basics

Value: -3206 → -3205 → -3204

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 641

Divisors: 1, 5, 641, 3205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110010000101

Octal: -6205

Duodecimal: -1A31

Hexadecimal: -c85

Square: 10272025

Square Root: 56.61271941887264

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

Expansion of (1-x)/(1+x-x²-2·x³). A78041

Coordination sequence for "svh" 3D uniform tiling. A299283

a(n) = ∑_k<=n A000203(k)*(n-k+1), where A000203(m) is the sum of divisors of m. A175254

Dana Scott's sequence: a(n) = (a(n-2) + a(n-1) * a(n-3)) / a(n-4), a(0) = a(1) = a(2) = a(3) = 1. A48736

Expansion of ∏_{m >= 1} (1 + q^m)^-2. A22597

Squarefree products of factors of Fermat numbers (A023394). A94358

Number of ordered pairs of integers (x,y) with x²+y² < n². A51132

Positions of 1's in A274640: Greedy Queens on a spiral. Equivalently, positions of 0's in A274641. A273059

Number of partitions of n where the difference between consecutive parts is at most 3. A238863

a(n) is the sum of all divisors of the first n odd numbers. A326123