838520920 has 64 divisors (see below), whose sum is σ = 2102824800. Its totient is φ = 299059200.

The previous prime is 838520909. The next prime is 838520951. The reversal of 838520920 is 29025838.

838520920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 838520920.

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, 19531 + ... + 45370.

Almost surely, 2^838520920 is an apocalyptic number.

It is an amenable number.

838520920 is an abundant number, since it is smaller than the sum of its proper divisors (1264303880).

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

838520920 is a wasteful number, since it uses less digits than its factorization.

838520920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64948 (or 64944 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 838520920 is about 28957.2256958432. The cubic root of 838520920 is about 942.9846733350.

The spelling of 838520920 in words is "eight hundred thirty-eight million, five hundred twenty thousand, nine hundred twenty".