388678836 has 48 divisors (see below), whose sum is σ = 1116209024. Its totient is φ = 102508416.

The previous prime is 388678831. The next prime is 388678841. The reversal of 388678836 is 638876883.

It is an interprime number because it is at equal distance from previous prime (388678831) and next prime (388678841).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388678831) 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, 176875 + ... + 179058.

Almost surely, 2^388678836 is an apocalyptic number.

It is an amenable number.

388678836 is an abundant number, since it is smaller than the sum of its proper divisors (727530188).

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

388678836 is a wasteful number, since it uses less digits than its factorization.

388678836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355960 (or 355958 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 388678836 is about 19714.9394115224. The cubic root of 388678836 is about 729.7884143157.

The spelling of 388678836 in words is "three hundred eighty-eight million, six hundred seventy-eight thousand, eight hundred thirty-six".