Properties of the Number -27715

Twenty-Seven Thousand Seven Hundred Fifteen

Basics

Value: -27716 → -27715 → -27714

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 23 × 241

Divisors: 1, 5, 23, 115, 241, 1205, 5543, 27715

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -110110001000011

Octal: -66103

Duodecimal: -14057

Hexadecimal: -6c43

Square: 768121225

Square Root: 166.47822680458847

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) = p(1)p(n) + p(2)p(n-1) + ... + p(k)p(n+1-k), where k = [ (n+1)/2 ], p = A000040 = the primes. A24697

Consider all consecutive integer Pythagorean 11-tuples (X, X+1, X+2, X+3, X+4, X+5, Z-4, Z-3, Z-2, Z-1, Z) ordered by increasing Z; sequence gives X values. A157096

Array read by antidiagonals: T(n,k) is the number of unrooted 3-connected triangulations of a disk with n interior nodes and k nodes on the boundary, n >= 1, k >= 3. A342053

Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n). A255410

Number of unrooted 3-connected triangulations of a pentagon with n interior nodes. A342054

Number of base 27 circular n-digit numbers with adjacent digits differing by 1 or less. A124726

Expansion of (1-2·x)/((2-x)*sqrt(5·x²-6·x+1))+1/(2-x). A262664

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 123", based on the 5-celled von Neumann neighborhood. A270212

a(n) = ∑_k=0..n (-1)^k*floor((1 + sqrt(2))^k). A277789