Properties of the Number 22194

Twenty-Two Thousand One Hundred Ninety-Four

Basics

Value: 22193 → 22194 → 22195

Parity: even

Prime: No

Previous Prime: 22193

Next Prime: 22229

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 137

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 81, 137

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011010110010

Octal: 53262

Duodecimal: 10A16

Hexadecimal: 56b2

Square: 492573636

Square Root: 148.97650821522163

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

Number of subsets of {1..n} whose greatest element can be written as a (strictly) positive linear combination of the others. A365043

Triangle read by rows: a(n, m) = S1(n, m)*3^n-m, where S1 are the signed Stirling numbers of first kind A008275 (n >= 1, 1 <= m <= n). A51141

Smallest number requiring n steps to reach a prime under the "add a digit" process described in A241180. A241182

Composites whose prime factorization in base 5 is an anagram of the number in base 5. A260049

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A300215

Number of maximal subsets of {1..n} containing no sums of distinct elements. A326498

Number of quasi-triominoes in an n X n bounding box. A94170

a(n) = number of triangles that can be formed from the points of a 3 X n grid. A262402

Number of 2 X n matrices over GF(3) under row and column permutations. A52267

Number of compositions of n into distinct parts with exactly two descents. A241721