Properties of the Number 28160

Twenty-Eight Thousand One Hundred Sixty

Basics

Value: 28159 → 28160 → 28161

Parity: even

Prime: No

Previous Prime: 28151

Next Prime: 28163

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁹ × 5 × 11

Divisors: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111000000000

Octal: 67000

Duodecimal: 14368

Hexadecimal: 6e00

Square: 792985600

Square Root: 167.80941570722425

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) = n*(n+1)*2^n-2. A1788

a(n) = 2·a(n-1) + 4·a(n-2), a(0)=1, a(1)=2. A63727

11-almost primes (generalization of semiprimes). A69272

Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having k ddu's [here u = (1,1) and d = (1,-1)]. A91894

Horadam sequence (0,1,4,2). A85449

Triangle T(n,k) (1 <= k <= n) of tangent numbers, read by rows: T(n,k) = coefficient of xⁿ/n! in expansion of (tan x)^k/k!. A59419

Triangle of coefficients of polynomials v(n,x) jointly generated with A207537; see Formula section. A207538

G.f. satisfies A(x) = (1 + x/A(x))/(1 - x). A366363

Integer coefficient array for polynomials related to the minimal polynomials of cos(2Pi/n). Rising powers of x. A181877

T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock nonsingular. A183688