Properties of the Number -82870

Eighty-Two Thousand Eight Hundred Seventy

Basics

Value: -82871 → -82870 → -82869

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 8287

Divisors: 1, 2, 5, 10, 8287, 16574, 41435, 82870

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100001110110110

Octal: -241666

Duodecimal: -3BB5A

Hexadecimal: -143b6

Square: 6867436900

Square Root: 287.8714991102801

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 3·10^k + 8·R_k - 7 is a prime, where R_k = 11...1 is the repunit (A002275) of length k. A102978

Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order. A253022