Properties of the Number -215530

Two Hundred Fifteen Thousand Five Hundred Thirty

Basics

Value: -215531 → -215530 → -215529

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 7 × 3079

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 3079, 6158

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -110100100111101010

Octal: -644752

Duodecimal: -A488A

Hexadecimal: -349ea

Square: 46453180900

Square Root: 464.25208669428724

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

a(n) = ∑_{k=0..floor(n/5)} (-1)^k * binomial(n-4·k,k) * Catalan(k). A360027

Weird numbers (A006037) whose sum of aliquot divisors is also a weird number. A371950