Properties of the Number 8190

Eight Thousand One Hundred Ninety

Basics

Value: 8189 → 8190 → 8191

Parity: even

Prime: No

Previous Prime: 8179

Next Prime: 8191

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7 × 13

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 13, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111111110

Octal: 17776

Duodecimal: 48A6

Hexadecimal: 1ffe

Square: 67076100

Square Root: 90.49861877399013

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

a(n) = 2ⁿ - 2. A918

Harmonic or Ore numbers: numbers k such that the harmonic mean of the divisors of k is an integer. A1599

a(2·n) = 3·2ⁿ - 2; a(2·n+1) = 2ⁿ⁺² - 2. A27383

Number of aperiodic binary strings of length n; also number of binary sequences with primitive period n. A27375

Exponential Riordan array (1, x·cosh(x)). A185951

a(n) = 2·n*(2·n+1). A2943

Octagonal pyramidal numbers: a(n) = n*(n+1)*(2·n-1)/2. A2414

Coordination sequence for "reo" 3D uniform tiling. A299279

13-gonal (or tridecagonal) numbers: a(n) = n*(11·n - 9)/2. A51865

Triangle read by rows: Joffe's central differences of zero, T(n,k), 1 <= k <= n. A241171