Properties of the Number 28871

Twenty-Eight Thousand Eight Hundred Seventy-One

Basics

Value: 28870 → 28871 → 28872

Parity: odd

Prime: Yes

Previous Prime: 28867

Next Prime: 28879

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 28871

Divisors: 1, 28871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000011000111

Octal: 70307

Duodecimal: 1485B

Hexadecimal: 70c7

Square: 833534641

Square Root: 169.91468447429727

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 primitive Pythagorean-like triples a²+b²=c²+k for k=-3 with 0<c<=10ⁿ. A121085

a(n) is the least number whose fourth power is an n-digit fourth power which has the maximum sum of digits (A373914(n)). A380111

a(n) is the largest number whose fourth power is an n-digit which has the maximum sum of digits (A373914(n)). A380797

Primes that are each the sum of two, three, and four consecutive composite numbers. A60339

Primes by index in A001945. A104499

Arises in the maximum number of C5's in a triangle-free graph. A185721

Base-8 palindromes that start with 7. A43027

Number of n X 2 binary arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors. A183364

Primes of the form 5n² - 9. A201790

Primes of the form (p+q)² + pq, where p and q are consecutive primes. A252231