Properties of the Number 20088

Twenty Thousand Eighty-Eight

Basics

Value: 20087 → 20088 → 20089

Parity: even

Prime: No

Previous Prime: 20071

Next Prime: 20089

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 31

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111001111000

Octal: 47170

Duodecimal: B760

Hexadecimal: 4e78

Square: 403527744

Square Root: 141.7321417322126

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

Smallest positive number using exactly n segments on a calculator display (when '6' and '7' are represented using 6 resp. 3 segments). A216261

T(n,k) = Number of n X k 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 neighboring 1's. A296327

Number of partitions in parts not of the form 15k, 15k+3 or 15k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 6 are greater than 1. A35957

Where record values occur in A010371. A143617

Numbers of the form p⁴*q³*r where p, q, and r are distinct primes. A179698

Smallest positive number that needs more lines when shown on a 7-segment display (digital clock) than any previous term. A38619

a(n) = x is the smallest number such that gcd(prime(x)-1,x-1) = n. A84315

Hypercomma numbers: n occurs in the sequence S[k+1]=S[k]+10·last_digit(S[k-1])+first_digit(S[k]) for each "legal" splitting n=concat(S[0],S[1]). A166508

a(n) = A200656(n)³ - A200657(n)². A200658

Values d for infinite sequence x³-y² = d with increasing coefficient r=sqrt(x)/|d| or family of solutions Mordell curve with extension sqrt(2). A200938