Properties of the Number 22186

Twenty-Two Thousand One Hundred Eighty-Six

Basics

Value: 22185 → 22186 → 22187

Parity: even

Prime: No

Previous Prime: 22171

Next Prime: 22189

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 11093

Divisors: 1, 2, 11093, 22186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011010101010

Octal: 53252

Duodecimal: 10A0A

Hexadecimal: 56aa

Square: 492218596

Square Root: 148.94965592440957

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 n such that p(8n) is prime, where p(n) is the number of partitions of n. A114168

Third row of Pascal-(1,2,1) array A081577. A81583

Decimal representation of the middle column of the "Rule 9" elementary cellular automaton starting with a single ON (black) cell. A266248

a(n) = ∑_{p∣n, p prime} p^φ(n/p). A369687

Numbers of the form 5^j + 9^k, for j and k >= 0. A226829

Least k such that k·A000668(n)*A000668(n+2) + 1 is prime, where A000668(n) is the n-th Mersenne prime. A365063

Numbers k such that the continued fraction for sqrt(k) has period 89. A20428

Number of (n+2) X 4 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals. A202441

Numbers k such that k-1 is a substring of k². A304290

Numbers whose base-2 representation has exactly 14 runs. A43581