82571028 has 24 divisors (see below), whose sum is σ = 193945920. Its totient is φ = 27340800.

The previous prime is 82571009. The next prime is 82571029. The reversal of 82571028 is 82017528.

It is a self number, because there is not a number n which added to its sum of digits gives 82571028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82571029) 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, 20973 + ... + 24596.

It is an arithmetic number, because the mean of its divisors is an integer number (8081080).

Almost surely, 2^82571028 is an apocalyptic number.

It is an amenable number.

82571028 is an abundant number, since it is smaller than the sum of its proper divisors (111374892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82571028 is a wasteful number, since it uses less digits than its factorization.

82571028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45727 (or 45725 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 82571028 is about 9086.8601838039. The cubic root of 82571028 is about 435.4542803410.

The spelling of 82571028 in words is "eighty-two million, five hundred seventy-one thousand, twenty-eight".