Properties of the Number 20426

Twenty Thousand Four Hundred Twenty-Six

Basics

Value: 20425 → 20426 → 20427

Parity: even

Prime: No

Previous Prime: 20411

Next Prime: 20431

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 7 × 1459

Divisors: 1, 2, 7, 14, 1459, 2918, 10213, 20426

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111111001010

Octal: 47712

Duodecimal: B9A2

Hexadecimal: 4fca

Square: 417221476

Square Root: 142.91955779388627

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

Sum of all odd numbers in Collatz (3x+1) trajectory of n. A213916

Percolation series for directed square lattice. A6461

Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 3 X n array. A219520

Partial sums of A147562. A272928

Row sums of inverse of Riordan array (1/(1+x),x/(1+x)⁴). A107026

Numbers k such that the continued fraction for sqrt(k) has period 87. A20426

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4. A197644