820415932 has 18 divisors (see below), whose sum is σ = 1641135048. Its totient is φ = 351541872.

The previous prime is 820415929. The next prime is 820415933. The reversal of 820415932 is 239514028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820415933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148858 + ... + 154270.

Almost surely, 2^820415932 is an apocalyptic number.

It is an amenable number.

820415932 is an abundant number, since it is smaller than the sum of its proper divisors (820719116).

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

820415932 is an frugal number, since it uses more digits than its factorization.

820415932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10837 (or 5422 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 820415932 is about 28642.9036935853. The cubic root of 820415932 is about 936.1483909545.

The spelling of 820415932 in words is "eight hundred twenty million, four hundred fifteen thousand, nine hundred thirty-two".