Properties of the Number -727

Seven Hundred Twenty-Seven

Basics

Value: -728 → -727 → -726

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: Yes

Factorization: 727

Divisors: 1, 727

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1011010111

Octal: -1327

Duodecimal: -507

Hexadecimal: -2d7

Square: 528529

Square Root: 26.962937525425527

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 (1-5·x-x²+x³)/((1+x)*(1-x)³). A141354

a(n) = (2 - 3ⁿ)*(-1)ⁿ. A168589

a(n) = 2-(-3)ⁿ. A81630

a(n) = 1 - 4·n - 4·n². A184882

Expansion of 3·q * b(q⁹)³ / c(q³) in powers of q³ where b(), c() are cubic AGM θ functions. A279005

Numerator generator for offsets from the quarter points of the Cantor ternary set to the center points of deleted middle thirds: 1 is in the list and if m is in the list -3m-4 and -3m+4 are in the list, which is ordered by absolute value. A355680

Let c(n) = x^2ⁿ-1*(1-x^2ⁿ), g(n) = 1 + x^2ⁿ-1 + x^2ⁿ, h(n) = ∏_i=1..n g(i); then use g.f. (1+2·x) - ∑_n>=1 c(n)/h(n). A151684

a(n) = 139·n² - 2307·n + 3331. A230307

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 342", based on the 5-celled von Neumann neighborhood. A269512

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 81", based on the 5-celled von Neumann neighborhood. A270101