Properties of the Number 19795

Nineteen Thousand Seven Hundred Ninety-Five

Basics

Value: 19794 → 19795 → 19796

Parity: odd

Prime: No

Previous Prime: 19793

Next Prime: 19801

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 5 × 37 × 107

Divisors: 1, 5, 37, 107, 185, 535, 3959, 19795

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110101010011

Octal: 46523

Duodecimal: B557

Hexadecimal: 4d53

Square: 391842025

Square Root: 140.6947049465615

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

Partial sum of usigma is divisible by n, where usigma(n) = A034448(n) and summatory-usigma(n) = A064609(n). A64611

G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 2·x * A(x)²)). A349253

A Wallis pair (x,y) satisfies σ(x²) = σ(y²); sequence gives y's for indecomposable Wallis pairs with x < y (ordered by values of x). A75769

Group the natural numbers such that the n-th group sum is divisible by prime(n): (1, 2, 3), (4, 5), (6, 7, 8, 9), (10, 11), (12, 13, 14, 15, 16, 17, 18, 19, 20, 21), ... Sequence contains the sum of the terms in the n-th group. A86491

a(n) = 2·A090495(n) - 1. A274297

Decimal expansion of π/e. A61382

Irregular array read by rows: row n lists the factorizations of n into a product of nondecreasing integers >= 2. A372053

Decimal expansion of sqrt(e)/22. A19795

Number of length n+5 0..2 arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms. A250330