Properties of the Number 28741

Twenty-Eight Thousand Seven Hundred Forty-One

Basics

Value: 28740 → 28741 → 28742

Parity: odd

Prime: No

Previous Prime: 28729

Next Prime: 28751

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 41 × 701

Divisors: 1, 41, 701, 28741

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000001000101

Octal: 70105

Duodecimal: 14771

Hexadecimal: 7045

Square: 826045081

Square Root: 169.53170794869024

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

Centered icosahedral (or cuboctahedral) numbers, also crystal ball sequence for f.c.c. lattice. A5902

Odd composite integers m such that A087130(m) == 5 (mod m). A335671

a(n) = 25·n² + 15·n + 1021. A214732

Odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 5 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=5 and b=-1, respectively. A337628

Denominators of continued fraction convergents to sqrt(641). A42231

Number of peaks at height >1 in all skew Dyck paths of semilength n. A128748

Number of (w,x,y,z) with all terms in {1,...,n} and |w-x| = 2*|x-y| - |y-z|. A212578

Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|<=|x-y|<=|y-z|. A212903

Number of n-step 4-dimensional nonnegative lattice walks starting at the origin and using steps that increment all components or decrement one component by 1. A346225

Sides of squares which are filled exactly (no holes, no overlaps) by the digits needed to write a subsequence of consecutive Fibonacci numbers, starting with 0. A158027