Properties of the Number -1887

Eight Hundred Eighty-Seven

Basics

Value: -1888 → -1887 → -1886

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 17 × 37

Divisors: 1, 3, 17, 37, 51, 111, 629, 1887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101011111

Octal: -3537

Duodecimal: -1113

Hexadecimal: -75f

Square: 3560769

Square Root: 43.439613257946945

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(n) = bin_prime_sum(fibonacci(A001651[n])), where fibonacci(A001651[n]) is A014437[n]. A59878

Expansion of 1/(1 - x² - x³ + x⁴). A77905

Expansion of 1/(1+x²-x³+x⁴). A129903

Partial sums of A050935. A203400

Percolation series for directed hexagonal lattice. A6836

Expansion of -1/(1 - x + x² - x³ + x⁴ + x⁶). A125629

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 137", based on the 5-celled von Neumann neighborhood. A270277

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood. A271288

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 401", based on the 5-celled von Neumann neighborhood. A271806

Expansion of (1-x)^-1/(1-x-x²+2·x³). A77867