Properties of the Number 19071

Nineteen Thousand Seventy-One

Basics

Value: 19070 → 19071 → 19072

Parity: odd

Prime: No

Previous Prime: 19069

Next Prime: 19073

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 × 163

Divisors: 1, 3, 9, 13, 39, 117, 163, 489, 1467, 2119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100101001111111

Octal: 45177

Duodecimal: B053

Hexadecimal: 4a7f

Square: 363703041

Square Root: 138.09779143780685

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

Numbers k such that k³ divides 17^k² + 1. A177817

Convolution of A006068 (inverse of Gray code) with itself: a(n) = ∑_k=1..n+1 A006068(k) * A006068(1+n-k). A268721

Numbers k such that 13·2^k - 1 is prime. A1773

Numbers k such that the largest prime factor of k is equal to the sum of primes dividing k+1 (with repetition). A71861

Number of simple chains with n-1 edges strongly embedded in a simple cubic lattice. A118339

a(n) = n³/6 + 3·n²/4 + 7·n/3 + 7/8 + (-1)ⁿ/8. A173154

Numbers k such that k²+1 = 2p,(k+1)²+1 = 5q, (k+2)²+1 = 10r where p, q, and r are primes. A181619

Expansion of ∏_k>=1 1 / (1 - ∑_j>=1 j·x^{j*(2·k - 1})). A329163

a(n) = (n - 1) * ∑_k=2..n A000010(k). A385682

Polynomial expansion of p(x)=1/(1 - 3 x + 2 x² + 2 x³ - 4 x⁴ + 4 x⁵ - 2 x⁶ - 2 x⁷ + 3 x⁸ - x⁹ - x¹⁷ + 3 x¹⁸ - 2 x¹⁹ - 2 x²⁰ + 4 x²¹ - 4 x²² + 2 x²³ + 2 x²⁴ - 3 x²⁵ + x²⁶). A164787