Properties of the Number -81782

Eighty-One Thousand Seven Hundred Eighty-Two

Basics

Value: -81783 → -81782 → -81781

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 103 × 397

Divisors: 1, 2, 103, 206, 397, 794, 40891, 81782

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011111101110110

Octal: -237566

Duodecimal: -3B3B2

Hexadecimal: -13f76

Square: 6688295524

Square Root: 285.97552342814237

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(0)=0, a(1)=0; for n>1, a(n) = a(n-1) + (n+2)*a(n-2) + 1. A213720

a(n) = ∑_j=1..n A003718(j-1)*prime(j). A342604

Exponent of least power of 2 having exactly n consecutive 5's in its decimal representation. A131539