Properties of the Number 28386

Twenty-Eight Thousand Three Hundred Eighty-Six

Basics

Value: 28385 → 28386 → 28387

Parity: even

Prime: No

Previous Prime: 28351

Next Prime: 28387

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 19 × 83

Divisors: 1, 2, 3, 6, 9, 18, 19, 38, 57, 83

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111011100010

Octal: 67342

Duodecimal: 14516

Hexadecimal: 6ee2

Square: 805764996

Square Root: 168.48145298518767

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

Trajectory of 537 under the Reverse and Add! operation carried out in base 2, written in base 10. A77076

Expansion of a(q)² * (b(q) * c(q) / 3)³ in powers of q where a(), b(), c() are cubic AGM θ functions. A136747

Triangle read by rows: T(n,k) (n >= 5, 4 <= k <= n-1) = number of lattice 3-polytopes of width larger than 1, size n, and k vertices. A319958

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,25. A64249

47-gonal numbers. A95311

Number of compositions of n where neighboring runs have different lengths. A335443

a(1) = 1; a(n) = a(n-1) + ∑_k=2..n a(floor(n/k)). A351620

a(n) = (5·n+1)*(5·n+6). A85025

Numbers k such that k*(3k-1)/2 is a pentagonal palindrome. A28386