Properties of the Number -207389

Two Hundred Seven Thousand Three Hundred Eighty-Nine

Basics

Value: -207390 → -207389 → -207388

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 7 × 13 × 43 × 53

Divisors: 1, 7, 13, 43, 53, 91, 301, 371, 559, 689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110010101000011101

Octal: -625035

Duodecimal: -A0025

Hexadecimal: -32a1d

Square: 43010197321

Square Root: 455.3998243302252

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

Number of steps to reach 0 when starting from (2ⁿ)-1 and iterating the map x -> x - (number of runs in binary representation of x): a(n) = A255072(A000225(n)). A255062

a(n) = ∑_{k=0..floor(2·n/7)} binomial(2·k+1,2·n-7·k). A392456

G.f. A(x) satisfies: A(x) = 1/(1 + (-x)^a(0)/(1 + (-x)^a(1)/(1 + (-x)^a(2)/(1 + (-x)^a(3)/(1 + ...))))), a continued fraction. A307543