Properties of the Number -213445

Two Hundred Thirteen Thousand Four Hundred Forty-Five

Basics

Value: -213446 → -213445 → -213444

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 42689

Divisors: 1, 5, 42689, 213445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110100000111000101

Octal: -640705

Duodecimal: -A3631

Hexadecimal: -341c5

Square: 45558768025

Square Root: 462.00108224981466

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/sqrt(1 - 10·x + x²). A6442

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 1/sqrt(1 - 2*(2·k+1)*x + x²). A335333

P₆(2n+1), the Legendre polynomial of order 6 at 2n+1. A144126

(2n)-th Legendre polynomial P_2n(x), evaluated at x = 2n-1. Here the Legendre polynomials are normalized so that P_n(1) = 1. A105952