Properties of the Number -15128

Fifteen Thousand One Hundred Twenty-Eight

Basics

Value: -15129 → -15128 → -15127

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 31 × 61

Divisors: 1, 2, 4, 8, 31, 61, 62, 122, 124, 244

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101100011000

Octal: -35430

Duodecimal: -8908

Hexadecimal: -3b18

Square: 228856384

Square Root: 122.99593489217439

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

Expansion of g.f.: 2^floor((n+1/2))*n!*(1-y)ⁿ⁺¹*f(x, y, m), where f(x, y, m) = 2^m+1*exp(2^m*t)/((1-y·exp(t))*(1 + (2^m+1-1)*exp(2^m*t))), and m = 1. A171695

T(n,k)=Number of 0..k arrays x(0..n+1) of n+2 elements without any two consecutive increases or two consecutive decreases. A200838

a(n) = Fibonacci(10·n)/55. A49670

a(n) = a(n-1) + a(n-2) - 1 for n > 1, a(0)=3, a(1)=2. A1612

a(n) = 5·F(n)² + 3*(-1)ⁿ where F(n) are the Fibonacci numbers A000045. A47946

Real part of absolute Gaussian perfect numbers, in order of increasing magnitude. A102531

a(n) = 9·n²-1. A136016

a(n) = Lucas(2·n) + 1. A65034

Column 2 of triangle A091602. A91605

a(n) = n³ + (n+1)³ + (n+2)³ + (n+3)³. A27603