Properties of the Number 28784

Twenty-Eight Thousand Seven Hundred Eighty-Four

Basics

Value: 28783 → 28784 → 28785

Parity: even

Prime: No

Previous Prime: 28771

Next Prime: 28789

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 7 × 257

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000001110000

Octal: 70160

Duodecimal: 147A8

Hexadecimal: 7070

Square: 828518656

Square Root: 169.65848048358797

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 the decimal concatenation of n and n². A53061

Table T(n,k) by antidiagonals: T(n,k) = number of partitions of n balls of k colors. A75196

Number of partitions of n balls of n colors. A75197

Numbers m such that m² = p² + k², with p > 0, where p = A007954(m) = the product of digits of m. A334542

Number of partitions of n unlabeled objects of 6 colors. A270239

Number of (2+1) X (n+1) arrays of permutations of 0..n·3+2 with each element having directed index change -2,0 -1,0 0,-1 or 1,1. A264629

Growth series for affine Coxeter group B₅. A267168

Coordination sequence for B₁₄ lattice. A107547

Number of 2-anisohedral polyominoes of order n. A120646

Expansion of e.g.f. exp(cosh(x)/cos(x)-1) (even powers only). A302579