Properties of the Number -216727

Two Hundred Sixteen Thousand Seven Hundred Twenty-Seven

Basics

Value: -216728 → -216727 → -216726

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 ² × 4423

Divisors: 1, 7, 49, 4423, 30961, 216727

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100111010010111

Octal: -647227

Duodecimal: -A5507

Hexadecimal: -34e97

Square: 46970592529

Square Root: 465.53947201069855

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

Expansion of (1 - x)/(1 - 2·x + 3·x²) in powers of x. A87455

Let φ = arccos(1/3), the dihedral angle of the regular tetrahedron. Then cos(n*φ) = a(n)/3ⁿ. A25172

Central terms of triangle A103284. A257641