Properties of the Number -393215

Three Hundred Ninety-Three Thousand Two Hundred Fifteen

Basics

Value: -393216 → -393215 → -393214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 78643

Divisors: 1, 5, 78643, 393215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

375 Try Today's Challenge

Representations

Binary: -1011111111111111111

Octal: -1377777

Duodecimal: -16B67B

Hexadecimal: -5ffff

Square: 154618036225

Square Root: 627.0685767920444

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

a(0) = 1; for n > 0, a(n) = 3·2^n-1 - 1. A83329

a(2n) = 2·2ⁿ - 1, a(2n+1) = 3·2ⁿ - 1. A52955

a(0) = 0; for n > 0, a(n) = 3·2^n-1 - 1. A55010

a(n) = 3·2ⁿ - 1. A153893

a(0) = 1; a(n) = 3·2ⁿ - 1, for n > 0. A52940

a(n) = 6·4ⁿ - 1. A140529

Minimum m such that the convergence speed of m^^m is equal to n >= 2, where A317905(n) represents the convergence speed of m^^m (and m = A067251(n), the n-th non-multiple of 10). A337392

Add 1, double, add 1, double, etc. A83416

a(n) = A292264(A243071(n)). A292263

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 641", based on the 5-celled von Neumann neighborhood. A283507