Properties of the Number -216566

Two Hundred Sixteen Thousand Five Hundred Sixty-Six

Basics

Value: -216567 → -216566 → -216565

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 31 × 499

Divisors: 1, 2, 7, 14, 31, 62, 217, 434, 499, 998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100110111110110

Octal: -646766

Duodecimal: -A53B2

Hexadecimal: -34df6

Square: 46900832356

Square Root: 465.3665222166287

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

Convolution of A000108 (Catalan numbers) with A020922. A45530

a(n) = ∑_k=0..n binomial(4·n+1,k) * binomial(3·n-k-1,n-k). A386939

a(n) = K₅(n) = ∑_k>=0 A090285(5,k)*2^k*binomial(n,k). a(n) = 2*(2·n⁵+45·n⁴+360·n³+1215·n²+1528·n+315)/15. A90297

Period length of continued fraction for square root of A095372(n)=1+90*(-1+100ⁿ)/99. A96486