Properties of the Number -27885

Twenty-Seven Thousand Eight Hundred Eighty-Five

Basics

Value: -27886 → -27885 → -27884

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 11 × 13 ²

Divisors: 1, 3, 5, 11, 13, 15, 33, 39, 55, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110110011101101

Octal: -66355

Duodecimal: -14179

Hexadecimal: -6ced

Square: 777573225

Square Root: 166.98802352264667

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 that can be expressed as k = w + x = y·z with w·x = y³ + z³ where w, x, y, and z are all positive integers. A57372

a(n) = prime(n)²-4. A166010

Quintisection A061037(5·n+2). A165248

a(n) = smallest k having at least four prime divisors d such that (d + n) | (k + n). A202159

Numbers n such that the decimal digits of n² are all prime. A275971

Numerators of continued fraction convergents to sqrt(569). A42090

The sequence e when b=[ 1,0,1,1,1,... ]. A42953

a(n) = (∑_k=1..n A073698(k))^1/n. A93928

Triangle T read by rows: T(n, m), for n >= 2, and m=1, 2, ..., n-1, equals the positive integer solution·of y² = x³ - A(n, m)²*x with the area A(n, m) = A249869(n, m) of the primitive Pythagorean triangle characterized by (n, m) or 0 if no such triangle exists. A278711

Numbers k such that k | sigma₆(k) + φ(k)⁶. A55700