Properties of the Number -28211

Twenty-Eight Thousand Two Hundred Eleven

Basics

Value: -28212 → -28211 → -28210

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 28211

Divisors: 1, 28211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -110111000110011

Octal: -67063

Duodecimal: -143AB

Hexadecimal: -6e33

Square: 795860521

Square Root: 167.9613050675661

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=0..n 1/binomial(n,k). A46825

Smallest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1. A2148

Numerator of (1/n)*∑_k=0..n-1 1/binomial(n-1,k) for n>0 else 0. A46878

Primes of the form abs(-66n³ + 3845n² - 60897n + 251831) in order of increasing nonnegative n. A272438

Primes having only {1, 2, 8} as digits. A385775

Primes of the form n² - 13. A154648

Primes in A065387 in the order of their appearance. A229264

Intersection of A251964, A252280 and A252281. A252283

Primes which become palindromic primes when the digits are rotated once to the right. A235000

Numerators of b(n) = b(n-1)/2 + 1/(2·n), b(0)=0. A242376