82178086 has 16 divisors (see below), whose sum is σ = 127825920. Its totient is φ = 39581640.

The previous prime is 82178081. The next prime is 82178087. The reversal of 82178086 is 68087128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82178081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11155 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (7989120).

Almost surely, 2^82178086 is an apocalyptic number.

82178086 is a deficient number, since it is larger than the sum of its proper divisors (45647834).

82178086 is a wasteful number, since it uses less digits than its factorization.

82178086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6099.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 82178086 is about 9065.2129594401. The cubic root of 82178086 is about 434.7624298406.

The spelling of 82178086 in words is "eighty-two million, one hundred seventy-eight thousand, eighty-six".