388422834 has 32 divisors (see below), whose sum is σ = 823815360. Its totient is φ = 121669632.

The previous prime is 388422829. The next prime is 388422841. The reversal of 388422834 is 438224883.

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, 72802 + ... + 77954.

It is an arithmetic number, because the mean of its divisors is an integer number (25744230).

Almost surely, 2^388422834 is an apocalyptic number.

388422834 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

388422834 is an abundant number, since it is smaller than the sum of its proper divisors (435392526).

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

388422834 is a wasteful number, since it uses less digits than its factorization.

388422834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914.

The product of its digits is 294912, while the sum is 42.

The square root of 388422834 is about 19708.4457530268. The cubic root of 388422834 is about 729.6281549026.

The spelling of 388422834 in words is "three hundred eighty-eight million, four hundred twenty-two thousand, eight hundred thirty-four".