Properties of the Number -216513

Two Hundred Sixteen Thousand Five Hundred Thirteen

Basics

Value: -216514 → -216513 → -216512

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁹ × 11

Divisors: 1, 3, 9, 11, 27, 33, 81, 99, 243, 297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100110111000001

Octal: -646701

Duodecimal: -A5369

Hexadecimal: -34dc1

Square: 46877879169

Square Root: 465.30957436958033

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

Sequence is identical to its third differences in absolute value: a(0), a(1), a(2), a(2n+1)=3a(2n)-3a(2n-1)+2a(2n-2), a(2n+2)=3a(2n+1)-3a(2n), with a(0)=a(1)=0, a(2)=1. A131665

a(n) = 3ⁿ*A168053(n). A171557

Numbers of the form 3ⁱ*11^j. A3597

Numbers that are the sum of 3 nonzero 4th powers in more than one way. A309762

a(n) = ∑_k=0..n k² * 2^n-k * binomial(n,k). A383136

a(n) = (n+1) * 3^n-1. A288834

a(n) = exp(-1/3) * ∑_k>=0 (3·k - 1)ⁿ / (3^k * k!). A337039

Numbers that are the sum of three fourth powers in exactly two ways. A344192

Second binomial transform of C(n+2,2). A81892

Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant = 0 (mod 3). A211033