Properties of the Number 28184

Twenty-Eight Thousand One Hundred Eighty-Four

Basics

Value: 28183 → 28184 → 28185

Parity: even

Prime: No

Previous Prime: 28183

Next Prime: 28201

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 13 × 271

Divisors: 1, 2, 4, 8, 13, 26, 52, 104, 271, 542

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111000011000

Octal: 67030

Duodecimal: 14388

Hexadecimal: 6e18

Square: 794337856

Square Root: 167.8809101714665

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 magic constant for any n X n magic square made from consecutive primes, or 0 if no such magic square exists. A73520

T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4. A239858

a(n) = 4394·n + 1820. A156636

From fundamental unit of Z[ (-n)^1/4 ]. A6829

The Wiener index of the nanostar dendrimer G_n , defined pictorially in the Golriz - Darafsheh - Khalifeh reference. A221012

Minimal peaks in digital expansions of π: positions of peaks equal to 1. A105275

Number of nX5 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4. A239855

Smallest magic sum for any n X n semimagic square made from consecutive primes, or 0 if no such magic square exists. A270829

a(n) = smallest potential magic constant for an n X n magic square composed of consecutive primes. A342124

Number of partitions satisfying cn(0,5) < cn(1,5) + cn(2,5) + cn(3,5) and cn(0,5) < cn(4,5) + cn(2,5) + cn(3,5). A39847