838390872 has 64 divisors (see below), whose sum is σ = 2289801600. Its totient is φ = 253693440.

The previous prime is 838390859. The next prime is 838390873. The reversal of 838390872 is 278093838.

838390872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838390873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224928 + ... + 228624.

It is an arithmetic number, because the mean of its divisors is an integer number (35778150).

Almost surely, 2^838390872 is an apocalyptic number.

It is an amenable number.

838390872 is an abundant number, since it is smaller than the sum of its proper divisors (1451410728).

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

838390872 is a wasteful number, since it uses less digits than its factorization.

838390872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 838390872 is about 28954.9800897877. The cubic root of 838390872 is about 942.9359209790.

The spelling of 838390872 in words is "eight hundred thirty-eight million, three hundred ninety thousand, eight hundred seventy-two".