Properties of the Number -28591

Twenty-Eight Thousand Five Hundred Ninety-One

Basics

Value: -28592 → -28591 → -28590

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 28591

Divisors: 1, 28591

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110111110101111

Octal: -67657

Duodecimal: -14667

Hexadecimal: -6faf

Square: 817445281

Square Root: 169.08873410135874

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

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d = 2, 4 or 6) and forming d-pattern = [6, 6, 4]; short d-string notation of pattern = [664]. A78858

Number of 1-separable partitions of n; see Comments. A239467

Primes p such that p⁴-p³+1 and p⁴-p³-1 are also primes. A238136

Primes that remain prime through 3 iterations of function f(x) = 3x + 8. A23279

Primes p such that p·floor(p/2)-2 and p·floor(p/2)+2 are also prime numbers. A164621

Numbers n with property that n² starts and ends with 81. A159775

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 90 ones. A31858

Primes p such that the sum of the digits of p is not prime, but the sum of each digit raised to the 4th power is prime. A91368

D'Agapeyeff cipher. A135209

Number of 4X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2·n² (number of collections of 4 zero-sum 2-vectors with total modulus squared not more than 2·n², ignoring vector and component permutations). A192703