Properties of the Number 28312

Twenty-Eight Thousand Three Hundred Twelve

Basics

Value: 28311 → 28312 → 28313

Parity: even

Prime: No

Previous Prime: 28309

Next Prime: 28319

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 3539

Divisors: 1, 2, 4, 8, 3539, 7078, 14156, 28312

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111010011000

Octal: 67230

Duodecimal: 14474

Hexadecimal: 6e98

Square: 801569344

Square Root: 168.26170093042563

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

Number of compositions of n whose circular differences are all 1 or -1. A325589

Convolution square of A073592. A276551

Expansion of (1-x)/(1-2·x+2·x²+x³). A78004

Numbers k such that (12^k - 1)² - 2 is prime. A364076

a(n) = ((5ⁿ mod 4ⁿ) mod 3ⁿ) mod 2ⁿ. A64854

a(n) = ∑_k=0..n r₄(k² + 1), where r₄(k) is the number of ways of writing k as a sum of 4 squares (A000118). A333174

G.f. A(x) satisfies: A(x) = (1 + x·A(x)) * (1 + x²*A(x)³). A181734

Odd numbers k such that {1..k-1} cannot be partitioned into disjoint sets I, J such that 2I == -J (mod k) and I, J are unions of cyclotomic cosets mod k. A28312

Starting term of the smallest n-chain of numbers whose squares are permutations of the same digits. A85546

Series reversion of x + x² + x³ + x⁴ + x⁵. A217365