Properties of the Number -27215

Twenty-Seven Thousand Two Hundred Fifteen

Basics

Value: -27216 → -27215 → -27214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 5443

Divisors: 1, 5, 5443, 27215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -110101001001111

Octal: -65117

Duodecimal: -138BB

Hexadecimal: -6a4f

Square: 740656225

Square Root: 164.9696941865384

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) = n! * ∑_{k=0..floor(n/5)} (-n/5)^k / (k! * (n-5·k)!). A362320

Numbers k such that k and k+2 are both A000120-perfect numbers (A175522). A360639

Number of (n+2) X (1+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 2 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 2 4 6 or 7. A252516