Properties of the Number 28572

Twenty-Eight Thousand Five Hundred Seventy-Two

Basics

Value: 28571 → 28572 → 28573

Parity: even

Prime: No

Previous Prime: 28571

Next Prime: 28573

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 2381

Divisors: 1, 2, 3, 4, 6, 12, 2381, 4762, 7143, 9524

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111110011100

Octal: 67634

Duodecimal: 14650

Hexadecimal: 6f9c

Square: 816359184

Square Root: 169.0325412457613

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) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes. A103741

Number of squares added at the n-th generation of a symmetric (with 45-degree angles), non-overlapping Pythagoras tree. A276677

Number of dyslexic rooted compound windmills with n nodes with no symmetries. A32256

Molien series for symmetrized weight enumerators of self-dual codes over GF(4) + GF(4)u with u² = 0. A92549

Number of arithmetical structures on D_n. A335676

a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units without partitioning a triangle into 3 element sets of trapezoids. A391452

Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,-1,3} for all i=1,...,n. A79999

Elements of A103741 that do not terminate in a zero digit. A103764

Number of (n+2) X (3+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically. A253505

Number of length n arrays of permutations of 0..n-1 with each element moved by -2 to 2 places and every three consecutive elements having its maximum within 4 of its minimum. A263697