Properties of the Number -28186

Twenty-Eight Thousand One Hundred Eighty-Six

Basics

Value: -28187 → -28186 → -28185

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 17 × 829

Divisors: 1, 2, 17, 34, 829, 1658, 14093, 28186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -110111000011010

Octal: -67032

Duodecimal: -1438A

Hexadecimal: -6e1a

Square: 794450596

Square Root: 167.88686666919483

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) = ∑_j=1..n ∑_k=1..n φ(j·k) / φ(k). A372636

Number of partitions p of 2n such that n - (number of parts of p) is a part of p. A238607

Number of partitions of n with equal nonzero number of parts congruent to each of 2 and 3 (mod 4). A35551