Properties of the Number -162687

One Hundred Sixty-Two Thousand Six Hundred Eighty-Seven

Basics

Value: -162688 → -162687 → -162686

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 61 × 127

Divisors: 1, 3, 7, 21, 61, 127, 183, 381, 427, 889

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111101101111111

Octal: -475577

Duodecimal: -7A193

Hexadecimal: -27b7f

Square: 26467059969

Square Root: 403.34476567819746

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

Lucas-Carmichael numbers: squarefree composite numbers k such that p | k => p+1 | k+1. A6972

Lucas-Carmichael numbers with 4 prime factors. A216926

Conjectured number of numbers that are not the sum of three n-gonal numbers, or -1 if infinite. A118279

Least Lucas-Carmichael number divisible by the n-th prime. A253597

a(n) = least Lucas-Carmichael number which is divisible by b(n), where {b(n)} (A255602) is the list of all numbers which could be a divisor of a Lucas-Carmichael number. A253598

Lucas-Carmichael numbers that are not congruent to 11 (mod 12). A110885

Conjectured number of numbers that are not the sum of three (2n+1)-gonal numbers; bisection of A118279. A118281