Properties of the Number 27878

Twenty-Seven Thousand Eight Hundred Seventy-Eight

Basics

Value: 27877 → 27878 → 27879

Parity: even

Prime: No

Previous Prime: 27851

Next Prime: 27883

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 53 × 263

Divisors: 1, 2, 53, 106, 263, 526, 13939, 27878

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110110011100110

Octal: 66346

Duodecimal: 14172

Hexadecimal: 6ce6

Square: 777182884

Square Root: 166.96706262014672

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 such that there is 1 prime between 100·k and 100·k + 99. A186393

Row T(n,3) of square array A086350. A86351

Square array of Pell related numbers, read by antidiagonals. A86350

a(n) = floor( n^π ). A61294

Numbers k such that k and k² use only the digits 1, 2, 4, 7 and 8. A136997

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 251", based on the 5-celled von Neumann neighborhood. A271018

a(n) = ∏_i=1..n (10ⁱ - 1). A27878

G.f. A(x) satisfies: 1/A(x)² + 4·x*A(x)² = 1/A(x²) + 2·x*A(x²). A187814

Minimum number of steps to reach n by repeated doubling and/or digit reversal starting from 1, or -1 if n cannot be reached. A385194