Properties of the Number 27890

Twenty-Seven Thousand Eight Hundred Ninety

Basics

Value: 27889 → 27890 → 27891

Parity: even

Prime: No

Previous Prime: 27883

Next Prime: 27893

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 2789

Divisors: 1, 2, 5, 10, 2789, 5578, 13945, 27890

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110110011110010

Octal: 66362

Duodecimal: 14182

Hexadecimal: 6cf2

Square: 777852100

Square Root: 167.0029939851379

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

a(n) = prime(n)² + 1. A66872

The smallest numbers of every class in a classification of positive numbers (see comment). A247395

a(n) = 81·n² - 72·n + 17. A154277

Numbers m such that σ(m-1) is a prime. A270413

Numbers n such that prime(n) contains a substring of all the prime digits in order, i.e., "2357". A295708

Number of 6-ary rooted trees with n nodes and height exactly 9. A36647

Numbers of the form q-p, where p and q are prime and q = p⁰+p¹+p²+..+p^k for some k. A166388

Append three digits, each increasing by one modulo 10 from the last digit of the nonnegative integers. 0 -> 123, 1 -> 1234 2 -> 2345, ... , 9 -> 9012, 10 -> 10123, etc. A167231

Fibonacci numbers: F(n) = F(n-1) + F(n-2) with F(0) = 0 and F(1) = 1. A45

Divisors of 99999999. A27890