Properties of the Number 82

Eighty-Two

Basics

Value: 81 → 82 → 83

Parity: even

Prime: No

Previous Prime: 79

Next Prime: 83

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 41

Divisors: 1, 2, 41, 82

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010

Octal: 122

Duodecimal: 6A

Hexadecimal: 52

Square: 6724

Square Root: 9.055385138137417

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

Squarefree numbers: numbers that are not divisible by a square greater than 1. A5117

Semiprimes (or biprimes): products of two primes. A1358

The composite numbers: numbers n of the form x·y for x > 1 and y > 1. A2808

The nonnegative even numbers: a(n) = 2n. A5843

Read n backwards (referred to as R(n) in many sequences). A4086

Squarefree semiprimes: Numbers that are the product of two distinct primes. A6881

a(n) = n² + 1. A2522

The nonprime numbers: 1 together with the composite numbers, A002808. A18252

EKG sequence (or ECG sequence): a(1) = 1; a(2) = 2; for n > 2, a(n) = smallest number not already used which shares a factor with a(n-1). A64413

a(n) = prime(n) - 1. A6093

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