Properties of the Number 6422

Six Thousand Four Hundred Twenty-Two

Basics

Value: 6421 → 6422 → 6423

Parity: even

Prime: No

Previous Prime: 6421

Next Prime: 6427

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 13 ² × 19

Divisors: 1, 2, 13, 19, 26, 38, 169, 247, 338, 494

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100100010110

Octal: 14426

Duodecimal: 3872

Hexadecimal: 1916

Square: 41242084

Square Root: 80.1373820385967

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 distinct products i·j*k with 1 <= i < j < k <= n. A27430

T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..1 nXk array. A218897

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297314

a(n) = ∑_k=1..n φ(k)². A57434

Number of horizontally convex polyoctagons containing n regular polygons (squares or octagons). A323260

Relative of Hofstadter Q-sequence: a(n) = max(0, n+3201) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A373236

Numbers k such that k | sigma₆(k). A55710

a(n) = 2ⁿ - A143658(n). A101836

Fibonacci sequence beginning 13, 9. A206609

Numbers z such that x² + y⁷ = z² for positive integers·and y. A293692