Properties of the Number -6728

Seven Hundred Twenty-Eight

Basics

Value: -6729 → -6728 → -6727

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 29 ²

Divisors: 1, 2, 4, 8, 29, 58, 116, 232, 841, 1682

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1101001001000

Octal: -15110

Duodecimal: -3A88

Hexadecimal: -1a48

Square: 45265984

Square Root: 82.02438661763951

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 theta₄(q)²*theta₄(q²)⁴ in powers of q. A120030

Expansion of tan(sin(x)*x). A9673

Expansion of q * χ(q³) * χ(q⁵) / (χ(q) * χ(q¹⁵))² in powers of q where χ() is a Ramanujan θ function. A145786

Expansion of exp(tan(log(1+x))). A9237

Number of domino tilings (or dimer coverings) of a 2n X 2n square. A4003

Array T(m,n) read by antidiagonals: number of domino tilings (or dimer tilings) of the m X n grid (or m X n rectangle), for m>=1, n>=1. A99390

a(n) = 8·n². A139098

Numbers of the form p² * q³, where p,q are distinct primes. A143610

Numbers m with the property that the symmetric representation of σ(m) has three parts of width one. A247687

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250877