Properties of the Number -2027

Twenty-Seven

Basics

Value: -2028 → -2027 → -2026

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2027

Divisors: 1, 2027

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111101011

Octal: -3753

Duodecimal: -120B

Hexadecimal: -7eb

Square: 4108729

Square Root: 45.02221673796171

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) = -n² + 9·n + 23. A126719

Triangle, read by rows, T(n,k,q) = c(k,q) + c(n-k,q) - c(n, q) where c(n,q) = ∏_j=1..n-1 ((q^j+1 - 1)/(q-1)) and q = 3. A172092

Row sums of A129396. A129397

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood. A271007

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 501", based on the 5-celled von Neumann neighborhood. A272567

Primes or negative values of primes of the form 59·n² - 1873·n + 8941 for n>=0. A217604

Safe primes p: (p-1)/2 is also prime. A5385

a(n) = n² + 2. A59100

Primes whose decimal representation is a valid number in base 9 and interpreted as such is again a prime. A235395

Primes of the form k² + 2. A56899