Properties of the Number 19022

Nineteen Thousand Twenty-Two

Basics

Value: 19021 → 19022 → 19023

Parity: even

Prime: No

Previous Prime: 19013

Next Prime: 19031

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 9511

Divisors: 1, 2, 9511, 19022

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101001001110

Octal: 45116

Duodecimal: B012

Hexadecimal: 4a4e

Square: 361836484

Square Root: 137.9202668210876

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

Triangle of increasing mobiles (circular rooted trees) with n nodes and k leaves. A55356

Sum of the denominators of the Farey series of order n (A006843). A240877

a(0)=3; a(n) = n² + a(n-1) for n>0. A153057

a(n) = floor(1/(ζ(4) - ∑_h=1..n 1/h⁴)). A248230

Number of increasing mobiles (circular rooted trees) with n nodes and 3 leaves. A55357

Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 2. A245121

a(n) = floor(Fibonacci(n)^1/π). A171962

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 187", based on the 5-celled von Neumann neighborhood. A270675

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 205", based on the 5-celled von Neumann neighborhood. A270731

a(n) = |{0 < k <= n: the number of twin prime pairs not exceeding k·n is a square}|. A237840