Properties of the Number -128802

One Hundred Twenty-Eight Thousand Eight Hundred Two

Basics

Value: -128803 → -128802 → -128801

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 21467

Divisors: 1, 2, 3, 6, 21467, 42934, 64401, 128802

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11111011100100010

Octal: -373442

Duodecimal: -62656

Hexadecimal: -1f722

Square: 16589955204

Square Root: 358.8899552787734

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

On a spirally numbered square grid, with labels starting at 1, this is the number of the last cell that a (1,n) leaper reaches before getting trapped, or -1 if it never gets trapped. A323471

Numbers k for which A064380(k) = k/2. A185078

Define sequence S(a₀,a₁) by a_n+2 is least integer such that a_n+2/a_n+1>a_n+1/a_n for n >= 0. This is S(3,4). A18908

Pisot sequence L(6,10). A48587

Expansion of (2-x-x²-x³)/((1-x)*(1-x²-x³)). A52954

Number of strings of numbers x(i=1..7) in 0..n with sum i⁴*x(i) equal to 2401·n. A184353

a(n)=the sum of the (1,2)- and (1,3)-entries of the matrix Pⁿ + Tⁿ, where the 3 X 3 matrices P and T are defined by P=[0,1,0;0,0,1;1,0,0] and T=[0,1,0;0,0,1;1,1,0]. A109524