820107332 has 12 divisors (see below), whose sum is σ = 1565659536. Its totient is φ = 372776040.

The previous prime is 820107289. The next prime is 820107359. The reversal of 820107332 is 233701028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9319358 + ... + 9319445.

It is an arithmetic number, because the mean of its divisors is an integer number (130471628).

Almost surely, 2^820107332 is an apocalyptic number.

It is an amenable number.

820107332 is a deficient number, since it is larger than the sum of its proper divisors (745552204).

820107332 is a wasteful number, since it uses less digits than its factorization.

820107332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638818 (or 18638816 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 820107332 is about 28637.5161632429. The cubic root of 820107332 is about 936.0309986203.

The spelling of 820107332 in words is "eight hundred twenty million, one hundred seven thousand, three hundred thirty-two".