Properties of the Number 28771

Twenty-Eight Thousand Seven Hundred Seventy-One

Basics

Value: 28770 → 28771 → 28772

Parity: odd

Prime: Yes

Previous Prime: 28759

Next Prime: 28789

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 28771

Divisors: 1, 28771

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000001100011

Octal: 70143

Duodecimal: 14797

Hexadecimal: 7063

Square: 827770441

Square Root: 169.62016389568782

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

Number of subsets of {1..n} containing n but not containing the sum of any two distinct elements. A364755

Primes of form 210·p + 1 where p is a prime. A51648

Primitive prime factors of the cyclotomic polynomial sequence φ(7,k) in the order in which they occur. A256146

Primes p such that, if q is the next prime, p² + q is a prime times a power of 10. A352852

Positions of records in A205561. A378189

G.f. := (1-sqrt(1-4·x+4·x²-4·x³))/(2(1-x+x²)x). A152171

Primes p such that (p+18), (p+36) and (p+72) are also prime. A175158

a(1) = 3; a(2) = 5; a(n+1) = a(n) + b(n), where b(n) = max {a(n-1)+-1, a(n-2)+-1, a(n-3)+-1, ..., a(1)+-1} such that a(n) + b(n) is a prime. A352952

Numbers whose base-13 representation has exactly 5 runs. A43660

Primes with a prime number of partitions into prime parts. A146949