Properties of the Number 9804

Nine Thousand Eight Hundred Four

Basics

Value: 9803 → 9804 → 9805

Parity: even

Prime: No

Previous Prime: 9803

Next Prime: 9811

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 19 × 43

Divisors: 1, 2, 3, 4, 6, 12, 19, 38, 43, 57

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001001100

Octal: 23114

Duodecimal: 5810

Hexadecimal: 264c

Square: 96118416

Square Root: 99.0151503558925

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 nonempty subsets of {1..n} whose product is divisible by their sum. A326156

a(n) = (n+1)*(n+3)*(n+8)/6. A297

Numbers k such that k² is palindromic in base 7. A29992

The number of equal-sized equilateral triangles in the highest stack of triangles contained in successive Genealodrons formed from 2ⁿ - 1 same size equilateral triangles. A179316

A variant of A367146 with application of the distance minimization to the first of two symmetrized versions of the strip bijection between two square lattices as described in A368121. A368124

A variant of A367894 with application of the distance minimization to the first of two symmetrized versions of the strip bijection between two square lattices as described in A368121. A368125

a(n) = ∑_{j=1..prime(n)-1} floor(j²/prime(n)). A165993

Triangle of coefficients of polynomials u(n,x) jointly generated with A210740; see the Formula section. A210739

a(n) = 27·n² - 51·n + 24, n>=1. A304836

Products of consecutive terms of the Padovan sequence A000931. A329227