Properties of the Number -19102

Nineteen Thousand One Hundred Two

Basics

Value: -19103 → -19102 → -19101

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 9551

Divisors: 1, 2, 9551, 19102

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100101010011110

Octal: -45236

Duodecimal: -B07A

Hexadecimal: -4a9e

Square: 364886404

Square Root: 138.20998516749793

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(n) = 3·a(n-1) - a(n-2) - 4·a(n-3) + 2·a(n-4) for n >= 4, where a(0) = 2, a(1) = 4, a(2) = 8, a(3) = 16, a(4) = 34, a(5) = 70 . A288170

Start of record gap in even semiprimes (A100484). A114058

Triangle T(n, k) = f(k, n-k+1) + f(n-k+1, k), where f(n, k) = round( ((1+sqrt(k))^2·n+1 - (1-sqrt(k))^2·n+1)/(2·sqrt(k))) - 1, read by rows. A173568

Numerator of 1/(2n-1) + 3/(2n-3) + 5/(2n-5) + ...(2n-1)/1. A61485