Properties of the Number 20050

Twenty Thousand Fifty

Basics

Value: 20049 → 20050 → 20051

Parity: even

Prime: No

Previous Prime: 20047

Next Prime: 20051

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 ² × 401

Divisors: 1, 2, 5, 10, 25, 50, 401, 802, 2005, 4010

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100111001010010

Octal: 47122

Duodecimal: B72A

Hexadecimal: 4e52

Square: 402002500

Square Root: 141.59802258506295

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

T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero. A231049

The 60-degree spoke (or ray) of a hexagonal spiral of Ulam. A244802

Internal digits of n² include digits of n as subsequence. A46834

Times in hours, minutes and seconds (to the nearest second) at which the hour and minute hands of an analog clock, if interchanged, continue to indicate some other albeit accurate times, over a complete 12-hour sweep for the slower hand. Leading zeros omitted. A121577

Number of maximal matchings in the n-gear graph. A287425

Numbers k such that k and k² use only the digits 0, 2, 3, 4 and 5. A136882

Numbers k such that k and k² use only the digits 0, 2, 4 and 5. A136897

Numbers k such that k and k² use only the digits 0, 2, 4, 5 and 6. A136898

Numbers k such that k and k² use only the digits 0, 2, 4, 5 and 7. A136899

Numbers k such that k and k² use only the digits 0, 2, 4, 5 and 8. A136900