Properties of the Number -13865

Thirteen Thousand Eight Hundred Sixty-Five

Basics

Value: -13866 → -13865 → -13864

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 47 × 59

Divisors: 1, 5, 47, 59, 235, 295, 2773, 13865

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11011000101001

Octal: -33051

Duodecimal: -8035

Hexadecimal: -3629

Square: 192238225

Square Root: 117.7497346069196

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically. A207908

Fundamental discriminants of real quadratic number fields with class number 10. A218160

T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nXk array. A220916

Products of 3 distinct safe primes. A157354

Self-convolution of Lucas numbers. A99924

Bisection of A099924 (convolution of Lucas numbers); even arguments. A203573

Expansion of f(-x⁶) / (f(-x²)³ * φ(-x)²) in powers of·where φ(), f() are Ramanujan θ functions. A259664

Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically. A207905

Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically. A207910

Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 2Xn array. A220917