Properties of the Number 19528

Nineteen Thousand Five Hundred Twenty-Eight

Basics

Value: 19527 → 19528 → 19529

Parity: even

Prime: No

Previous Prime: 19507

Next Prime: 19531

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 2441

Divisors: 1, 2, 4, 8, 2441, 4882, 9764, 19528

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110001001000

Octal: 46110

Duodecimal: B374

Hexadecimal: 4c48

Square: 381342784

Square Root: 139.74262055650738

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 lines through exactly 2 points of an n X n grid of points. A18809

G.f. A(x) defined by: A(x)³ consists entirely of integer coefficients between 1 and 3 (A083953); A(x) is the unique power series solution with A(0)=1. A84203

Lexicographically earliest sequence of distinct positive integers such that for any n > 0, a(n) and a(n+1) are congruent modulo the n-th prime number, and the least value not yet in the sequence appears as soon as possible. A367290

Expansion of (1-x²-x³)/(1-2·x-5·x²-4·x³-x⁴). A11367

Erroneous version of A269484. A14277

Number of numbers below 10ⁿ with nonzero multiplicative digital root 9. A51829

Triangular array read by rows: for n, k >= 1, a(n+1, 1) = 2·a(n, n); a(n+1, k+1) = a(n, k)+a(n+1, k). A129340

Number of trees on n nodes with 2 forbidden limbs of sizes 7 and 8. A269484

Numbers k such that 6·10^k + 37 is prime. A281903

Poincaré series [or Poincare series] for depths of roots in a certain root system. A19528