Properties of the Number 28199

Twenty-Eight Thousand One Hundred Ninety-Nine

Basics

Value: 28198 → 28199 → 28200

Parity: odd

Prime: No

Previous Prime: 28183

Next Prime: 28201

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 163 × 173

Divisors: 1, 163, 173, 28199

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111000100111

Octal: 67047

Duodecimal: 1439B

Hexadecimal: 6e27

Square: 795183601

Square Root: 167.92557875439942

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) = prime(n)*prime(n+2). A90076

Sequence of pairwise relatively prime numbers of class P₄ (see comment in A275246). A275248

Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly three bit positions. A261075

Numbers m such that Stern polynomial B(m,x) has no irreducible polynomial factors that themselves are Stern polynomials. The initial a(1) = 1 is included by convention. A389918

Numbers k such that k² + 1 == 0 (mod 41²). A157116

∑_{i in 1..p-1, j in 1..p-1, i·j mod p = 1} i·j, where p = n-th prime. A272650

a(n)=(-1)ⁿ(1 - (1/12)n(n + 1)(12 - n + n²)). A80275

a(n) = prime(n) times the n-th nonnegative noncomposite. A176098

Numbers such that the sum of the reverse of their aliquot parts is equal to the reverse of the sum of their aliquot parts. A278948

Numbers k such that 311·2^k+1 is prime. A322946