Properties of the Number 28051

Twenty-Eight Thousand Fifty-One

Basics

Value: 28050 → 28051 → 28052

Parity: odd

Prime: Yes

Previous Prime: 28031

Next Prime: 28057

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 28051

Divisors: 1, 28051

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110110110010011

Octal: 66623

Duodecimal: 14297

Hexadecimal: 6d93

Square: 786858601

Square Root: 167.48432762500497

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

Primes of the form 2n²+18n+7, n>=0. A154592

Expansion of g.f. (1-2·x+51·x²)/(1-x)³. A257352

a(0)=1, a(1)=1, a(n) = 11·a(n/2) for even n, and a(n) = 10·a((n-1)/2) + a((n+1)/2) for odd n >= 3. A116525

Primes p such that prime(p)² - 2 = prime(q) for some prime q. A261354

Primes of the form k² - 7·k + 7. A89376

a(n) = ∑_k=0..n 5^k * 2^n-k * binomial(n+k-1,k). A386766

Constant term of the reduction of n-th polynomial at A158983 by x²->x+2. A192342

P(n,k) is an array read by rows, with n > 0 and k=1..5, where row n gives the chain of 5 consecutive primes {p(i), p(i+1), p(i+2), p(i+3), p(i+4)} having the symmetrical property p(i) + p(i+4) = p(i+1) + p(i+3) = 2·p(i+2) for some index i. A267028

Primes prime(k) such that prime(k)*k falls between twin primes. A80174

Primes p such that (p+18), (p+36) and (p+72) are also prime. A175158