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Properties of the Number 22443

Twenty-Two Thousand Four Hundred Forty-Three

Basics

Value: 22442 → 22443 → 22444

Parity: odd

Prime: No

Previous Prime: 22441

Next Prime: 22447

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7481

Divisors: 1, 3, 7481, 22443

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011110101011

Octal: 53653

Duodecimal: 10BA3

Hexadecimal: 57ab

Square: 503688249

Square Root: 149.8098795140027

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

Absolute discriminants of complex quadratic fields with 3-class group of elementary abelian type (3,3) of rank 2. A242863
Absolute discriminants of complex quadratic fields with 3-class rank 2. A242862
Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 3, except for the cases mentioned in the COMMENTS. A242878
Partial sums of A007694. A174030
G.f.: ∏k>=1, j>=1 1/(1 - xj·k4). A280662
Numbers k such that 10k + 6·Rk - 3 is prime, where Rk = 11...1 is the repunit (A002275) of length k. A102939
Sequence and first differences include all positive integers except 2. A22443
Discriminants of imaginary quadratic fields with class number 18 (negated). A46015
Number of ascent sequences of length n with exactly three descents. A241873
Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0. A255790