397695828 has 48 divisors (see below), whose sum is σ = 943810560. Its totient is φ = 130317024.

The previous prime is 397695769. The next prime is 397695871. The reversal of 397695828 is 828596793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225213 + ... + 226971.

It is an arithmetic number, because the mean of its divisors is an integer number (19662720).

Almost surely, 2^397695828 is an apocalyptic number.

It is an amenable number.

397695828 is an abundant number, since it is smaller than the sum of its proper divisors (546114732).

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

397695828 is a wasteful number, since it uses less digits than its factorization.

397695828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076 (or 2074 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 57.

The square root of 397695828 is about 19942.3125038196. The cubic root of 397695828 is about 735.3888007282.

The spelling of 397695828 in words is "three hundred ninety-seven million, six hundred ninety-five thousand, eight hundred twenty-eight".