Properties of the Number 28928

Twenty-Eight Thousand Nine Hundred Twenty-Eight

Basics

Value: 28927 → 28928 → 28929

Parity: even

Prime: No

Previous Prime: 28927

Next Prime: 28933

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁸ × 113

Divisors: 1, 2, 4, 8, 16, 32, 64, 113, 128, 226

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000100000000

Octal: 70400

Duodecimal: 148A8

Hexadecimal: 7100

Square: 836829184

Square Root: 170.0823330037544

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

Products of the 8th power of a prime and a distinct prime (p⁸*q). A179668

Number of ways to place 2 nonattacking bishops on an n X n toroidal board. A177755

Number of lattice paths from (0,0) to (n,n) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1). A225042

Number of obtuse isosceles triangles on an n X n grid. A190318

Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 310", based on the 5-celled von Neumann neighborhood. A287604

a(n) = A341886(n)/2; numbers k such that A307437(k) is even. A341887

Integers that reach the (47360, 29127) cycle described in A234534, after iterations of numerator(σ(n)/n) = A017665(n). A249614

Numerators of continued fraction convergents to sqrt(310). A41584

a(n) in base 15 is a repdigit. A48339

Number of lunar partitions of n: number of ways of writing n as a lunar sum of distinct terms, ignoring order. A87079