Properties of the Number -128406

One Hundred Twenty-Eight Thousand Four Hundred Six

Basics

Value: -128407 → -128406 → -128405

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 21401

Divisors: 1, 2, 3, 6, 21401, 42802, 64203, 128406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111010110010110

Octal: -372626

Duodecimal: -62386

Hexadecimal: -1f596

Square: 16488100836

Square Root: 358.3378294291575

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

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

Numbers k such that iphi(k) divides k, where iphi is the infinitary Euler φ function (A064380). A373057

Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303183