Properties of the Number -228486

Two Hundred Twenty-Eight Thousand Four Hundred Eighty-Six

Basics

Value: -228487 → -228486 → -228485

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 113 × 337

Divisors: 1, 2, 3, 6, 113, 226, 337, 339, 674, 678

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110111110010000110

Octal: -676206

Duodecimal: -B0286

Hexadecimal: -37c86

Square: 52205852196

Square Root: 478.0020920456311

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

G.f.: ∏_n>=1 (1 - A002203(n)*xⁿ + (-1)ⁿ*x^2·n) where A002203(n) is the companion Pell numbers. A204382

Companion Pell numbers: a(n) = 2·a(n-1) + a(n-2), a(0) = a(1) = 2. A2203

a(n) = 6·a(n-1) - a(n-2), with a(0) = 2, a(1) = 6. A3499

Numbers such that floor(a(n)² / 8) is again a square. A204514

Square array T(M,N) read by antidiagonals: number of dimer tilings of a 2M·2N Klein bottle. A103999

Expansion of 1/(1 - x - ∑_k>=2 floor(1/ω(k))*x^k), where ω(k) is the number of distinct prime factors (A001221). A280543

Expansion of (1+x²)/(1-2·x-x²). A99425

Numerators of continued fraction convergents to sqrt(32). A41052

Squarefree numbers m such that the equation x*(x+1)*(x+2) = m·y² has more than one solution (x,y) with x>0 and y>0. A335715

Array T(n,k) read by antidiagonals: T(n,k) = sum(i=0...n, (-1)ⁿ⁺ⁱ * C(n+i,2i) * n/(2i+1) * k²ⁱ⁺¹ ), n>0, k>1. A231123