Properties of the Number 28958

Twenty-Eight Thousand Nine Hundred Fifty-Eight

Basics

Value: 28957 → 28958 → 28959

Parity: even

Prime: No

Previous Prime: 28949

Next Prime: 28961

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 14479

Divisors: 1, 2, 14479, 28958

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000100011110

Octal: 70436

Duodecimal: 14912

Hexadecimal: 711e

Square: 838565764

Square Root: 170.17050273181894

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

Arises in enumerating Huffman codes, compact trees, and sums of unit fractions. A194628

Number of partitions p = [x(1), ..., x(k)], where x(1) >= x(2) >= ... >= x(k), of n such that max(x(i) - x(i-1)) <= number of distinct parts of p. A241819

a(n) = (sum of first n primes)² + sum of (squares of first n primes). A65762

a(n) = (p-1)! mod p² where p = n-th prime. A112660

a(0)=1, a(1)=2, a(n) = 31·a(n-1) - 29·a(n-2). A256278

Numbers k such that (91·10^k + 11)/3 is prime. A271822

Numbers represented by quadratic form with Gram matrix [ 2, 1; 1, 12 ] (divided by 2). A28958