82128158 has 16 divisors (see below), whose sum is σ = 140991840. Its totient is φ = 35147616.

The previous prime is 82128157. The next prime is 82128169. The reversal of 82128158 is 85182128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82128157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7028 + ... + 14616.

It is an arithmetic number, because the mean of its divisors is an integer number (8811990).

Almost surely, 2^82128158 is an apocalyptic number.

82128158 is a deficient number, since it is larger than the sum of its proper divisors (58863682).

82128158 is a wasteful number, since it uses less digits than its factorization.

82128158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371.

The product of its digits is 10240, while the sum is 35.

The square root of 82128158 is about 9062.4587171474. The cubic root of 82128158 is about 434.6743641238.

The spelling of 82128158 in words is "eighty-two million, one hundred twenty-eight thousand, one hundred fifty-eight".