388922688 has 448 divisors, whose sum is σ = 1482547200. Its totient is φ = 97044480.

The previous prime is 388922671. The next prime is 388922693. The reversal of 388922688 is 886229883.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×388922688² = 302521714482290688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4923033 + ... + 4923111.

Almost surely, 2^388922688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388922688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741273600).

388922688 is an abundant number, since it is smaller than the sum of its proper divisors (1093624512).

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

388922688 is a wasteful number, since it uses less digits than its factorization.

388922688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 139 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 388922688 is about 19721.1228889229. The cubic root of 388922688 is about 729.9410023003.

The spelling of 388922688 in words is "three hundred eighty-eight million, nine hundred twenty-two thousand, six hundred eighty-eight".