Properties of the Number -2788

Seven Hundred Eighty-Eight

Basics

Value: -2789 → -2788 → -2787

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 17 × 41

Divisors: 1, 2, 4, 17, 34, 41, 68, 82, 164, 697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: -101011100100

Octal: -5344

Duodecimal: -1744

Hexadecimal: -ae4

Square: 7772944

Square Root: 52.80151512977634

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 1 / (χ(x) * χ(x⁷)) in powers of·where χ() is a Ramanujan θ function. A246762

Expansion of f(-x²)⁵ * f(-x¹²)³ / (f(x)² * f(-x⁸)⁶) in powers of·where f() is a Ramanujan θ function. A262162

Expansion of 1/((1-x)²*(1-x²)*(1-x³)). A601

Number of benzenoids with 22 hexagons, C_2v symmetry and containing n carbon atoms. A123106

Numbers k such that k³ divides 3^k² - 1. A129211

a(n) = n*(3·n + 13)/2. A140672

Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 2 + 3·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - 2·x - x². A367297

Numbers k such that k³ divides 9^k² - 1. A177909

Number of subsets of {1..n} containing n but not containing the sum of any two distinct elements. A364755

Number of partitions of n, with two kinds of 1, 2, 3 and 4. A710