Properties of the Number 28319

Twenty-Eight Thousand Three Hundred Nineteen

Basics

Value: 28318 → 28319 → 28320

Parity: odd

Prime: Yes

Previous Prime: 28309

Next Prime: 28349

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 28319

Divisors: 1, 28319

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111010011111

Octal: 67237

Duodecimal: 1447B

Hexadecimal: 6e9f

Square: 801965761

Square Root: 168.28250057566888

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

Numerator of ∑_k=1..n (-1)^k+1/k!. A103816

Primes p such that (p-1)/2 and (p-3)/4 are also prime. A66179

Primes p such that q-p = 30, where q is the next prime after p. A124596

Primes of the form 16·k-1 such that 4·k-1 and 8·k-1 are also primes. A101793

Primes of the form 32·k-1 such that 4·k-1, 8·k-1 and 16·k-1 are also primes. A101798

Triple-safe primes p: p, (p-1)/2, (p-3)/4, and (p-7)/8 are all prime. A157358

Number of partitions of 2n such that (sum of parts having multiplicity 1) = sum of all other parts. A240447

Numerators of b(n) = (1/16ⁿ)*(4/(8·n+1) - 2/(8·n+4) - 1/(8·n+5) - 1/(8·n+6)). A48581

a(n) = ceiling(binomial(n,6)/n). A53643

Primes p such that (p¹²⁸ + 1)/2 is prime. A341230