Properties of the Number -215220

Two Hundred Fifteen Thousand Two Hundred Twenty

Basics

Value: -215221 → -215220 → -215219

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 17 × 211

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100100010110100

Octal: -644264

Duodecimal: -A4670

Hexadecimal: -348b4

Square: 46319648400

Square Root: 463.91809621958055

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

First member of the Diophantine pair (m, k) that satisfies 8*(m² + m) = k² + k; a(n) = m. A336623

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+359)² = y². A130610

a(n) = 2·a(n-1) + 2·a(n-3) + a(n-4) - 1, with a(0) = 0 = a(1), a(2) = 2, and a(3) = 3. A353582