Properties of the Number 9928

Nine Thousand Nine Hundred Twenty-Eight

Basics

Value: 9927 → 9928 → 9929

Parity: even

Prime: No

Previous Prime: 9923

Next Prime: 9929

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 17 × 73

Divisors: 1, 2, 4, 8, 17, 34, 68, 73, 136, 146

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011001000

Octal: 23310

Duodecimal: 58B4

Hexadecimal: 26c8

Square: 98565184

Square Root: 99.6393496566492

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

Number of fully recursively anti-transitive rooted trees with n nodes. A324840

T(n,k)=Number of length-n 0..k arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1. A269640

Irregular triangle read by rows: T(n,k) is the number of identity trees with n nodes and maximal branching factor k. A244523

Numbers which are the sum of two positive cubes and divisible by 17. A99178

Expansion of φ(x²) / f(-x) in powers of·where φ(), f() are Ramanujan θ functions. A226622

Numbers k such that the k-th prime is of the form 2·j² + 1. A90612

a(n) = n³ + (n+2)³. A153976

Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 - 3·x)/(1 - 5·x - 2·x²). A180038

Infinitary Zumkeller numbers (A335197) whose set of infinitary divisors can be partitioned into two disjoint sets of equal sum in a single way. A335199

Euler-Seidel matrix T(k,n) with start sequence e.g.f. 2x/(1+e^2x), read by antidiagonals. A99028