Properties of the Number -92781

Ninety-Two Thousand Seven Hundred Eighty-One

Basics

Value: -92782 → -92781 → -92780

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 ² × 61

Divisors: 1, 3, 9, 13, 39, 61, 117, 169, 183, 507

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10110101001101101

Octal: -265155

Duodecimal: -45839

Hexadecimal: -16a6d

Square: 8608313961

Square Root: 304.59973736035954

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

Numbers k such that (1/k) * ∑_d∣k d*σ(d) is an integer. A69520

Odd numbers k such that rad(k) divides σ(k). A336554

Odd integers k such that σ(k)² is divisible by k. A263983

Numbers k for which A053585(σ(k)) is equal to A053585(k) and that satisfy also Euler's condition for odd perfect numbers (A228058). A388276

Odd numbers k for which A000005(2·k) >= A017665(2·k), where A000005 is the number of divisors function, and A017665 is the numerator of the abundancy ratio, σ(k)/k. A388277

a(n+2) = a(n+1) + a(n) - (2·n + 1) where a(0)=7, a(1)=11. A88981

The Wiener index of the graph obtained by applying Mycielski's construction to a benzenoid consisting of a linear chain of n hexagons. A228597

Odd spoof k-perfect numbers of order <= 10. A389834