Properties of the Number 28087

Twenty-Eight Thousand Eighty-Seven

Basics

Value: 28086 → 28087 → 28088

Parity: odd

Prime: Yes

Previous Prime: 28081

Next Prime: 28097

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 28087

Divisors: 1, 28087

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110110110111

Octal: 66667

Duodecimal: 14307

Hexadecimal: 6db7

Square: 788879569

Square Root: 167.59176590751707

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) = ∑_{d divides n} (-1)^n/d+1*d³. A78307

a(n) is the smallest number k that has a shortest addition chain whose length A003313(k) = A003313(n·k), or 0 if this never happens. A115016

Numbers k such that A003313(k) = A003313(7·k). A116462

Inverse Moebius transform of A000056. A350156

7th row of number array A083064. A83068

Expansion of x*(1 + x)/((1-2·x)*(1+x+x²)). A294627

Primes followed by a [10,2,10] prime difference pattern of A001223. A52376

First subdiagonal of number array A083064. A83071

a(n) = n⁵-n⁴-n³-n²-n-1. A125083

Expansion of (1 - x)/(1 + x - x² + 2·x³). A78043