Properties of the Number 20089

Twenty Thousand Eighty-Nine

Basics

Value: 20088 → 20089 → 20090

Parity: odd

Prime: Yes

Previous Prime: 20071

Next Prime: 20101

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 20089

Divisors: 1, 20089

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111001111001

Octal: 47171

Duodecimal: B761

Hexadecimal: 4e79

Square: 403567921

Square Root: 141.73566946961517

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 k such that k² contains exactly 9 different digits. A54037

Primes p such that A001175(p) = (p-1)/9. A308794

Consider Watanabe's 3-shift tag system {00/1011} applied to the word (100)ⁿ; a(n) = position of the longest word in the orbit, or -1 if the orbit is unbounded. A292094

Numbers k such that binomial(4k, k) + 1 is prime. A125241

Boustrophedon transform of triangular numbers 1,1,3,6,10,... A718

Triangle T(n,k) of numbers with e.g.f. exp((exp((1+x)*y)-1)/(1+x)), k=0..n-1. A59340

Prime lucky numbers k (from A031157) such that nextprime(k)=nextlucky(k). A57698

Prime numbers congruent to 1 or 169 modulo 240 representable by both x² + 150·y² and x² + 960·y². A325087

Number of distinct products i·j*k·l for 1 <= i < j < k < l <= n. A100438

Consider primes p such that integer part of the volume of cube with faces of area p is prime; sequence gives integer part of volumes. A107989