Properties of the Number 20190

Twenty Thousand One Hundred Ninety

Basics

Value: 20189 → 20190 → 20191

Parity: even

Prime: No

Previous Prime: 20183

Next Prime: 20201

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 673

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 673, 1346

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111011011110

Octal: 47336

Duodecimal: B826

Hexadecimal: 4ede

Square: 407636100

Square Root: 142.0915198032592

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

Record (maximal) gaps between prime triples (p, p+2, p+6). A201598

G.f.: Im((2·i; x)_oo), where (a; q)_oo is the q-Pochhammer symbol, i = sqrt(-1). A292140

McKay-Thompson series of class 21D for Monster. A58566

Triangle, read by rows, where T(n,k) is the coefficient of q^nk+k in the squared q-factorial of n+1. A129274

Column 1 of triangle A129274; a(n) is the coefficient of qⁿ⁺² in the squared q-factorial of n+2. A129275

McKay-Thompson series of class 21D for the Monster group with a(0) = 2. A226015

Number of integers in n-th generation of tree T(-3/4) defined in Comments. A274151

Numbers equidistant from twin prime pairs that are also equidistant from numbers equidistant from twin prime pairs. A260517

Numbers k such that Bernoulli number B_k has denominator 14322. A295588

G.f.: ∑_k>=0 A000009(k)² * x^k / ∑_k>=0 A000041(k) * x^k. A305350