Properties of the Number 16804

Sixteen Thousand Eight Hundred Four

Basics

Value: 16803 → 16804 → 16805

Parity: even

Prime: No

Previous Prime: 16787

Next Prime: 16811

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 4201

Divisors: 1, 2, 4, 4201, 8402, 16804

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100000110100100

Octal: 40644

Duodecimal: 9884

Hexadecimal: 41a4

Square: 282374416

Square Root: 129.63024338479042

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

Becomes prime after n iterations of f(x) = σ(x)-1 (least inverse of A039655). A39656

a(n) = ∑_{k=0..floor(n/3)} binomial(n-1-2·k,n-3·k) * binomial(2·k,k). A360309

List of numbers n such that A039655(n) reaches a new record high. A292114

Monotonic ordering of nonnegative differences 7ⁱ-3^j, for 40>= i>=0, j>=0. A192154

Expansion of 1/(1 - x³ - x⁴ - x⁵ - x⁶ + x⁹). A225484

Row sums of triangle A131948. A131949

Number of (w,x,y) with all terms in {0,...,n} and w ≠ min(|w-x|, |x-y|, |y-w|). A213492

For 0 <= R <= 255, let s(R,n) = eventual period of a single cell in a Rule R cellular automaton operating in a cyclic universe of width n; a(n) is the nearest integer to max_R s(R,n)/n (rounded down in case of ties). A334500

Fourier coefficients of the modular form (1/t_3A) * F_3A¹⁶. A341561

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones. A31842