Properties of the Number 20056

Twenty Thousand Fifty-Six

Basics

Value: 20055 → 20056 → 20057

Parity: even

Prime: No

Previous Prime: 20051

Next Prime: 20063

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 23 × 109

Divisors: 1, 2, 4, 8, 23, 46, 92, 109, 184, 218

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111001011000

Octal: 47130

Duodecimal: B734

Hexadecimal: 4e58

Square: 402243136

Square Root: 141.61920773680384

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 Bernoulli number B_n has denominator 1410. A272369

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock. A186568

The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 1 to n, and each number in a higher row is the sum of the two numbers directly below it. A189162

Numbers k such that (k+1)*2^k - 1 is prime. A230769

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 37 ones. A31805

Number of (n+2)X3 0..2 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock. A186560

Number of (n+2) X 8 0..2 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock. A186565

Number of 4-step self-avoiding walks on an n X n square summed over all starting positions. A188149

Table read by rows: n-th row lists all positive integers k such that exactly half the integers in 1, 2, ..., k are pandigital in base n. A260900

G.f. satisfies: A(x) = 1 + 2·x*AGM(A(x)², A(-x)²). A272822