388371680 has 96 divisors (see below), whose sum is σ = 953957088. Its totient is φ = 149299200.

The previous prime is 388371653. The next prime is 388371701. The reversal of 388371680 is 86173883.

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, 478475 + ... + 479285.

It is an arithmetic number, because the mean of its divisors is an integer number (9937053).

Almost surely, 2^388371680 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 388371680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476978544).

388371680 is an abundant number, since it is smaller than the sum of its proper divisors (565585408).

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

388371680 is a wasteful number, since it uses less digits than its factorization.

388371680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 388371680 is about 19707.1479418002. The cubic root of 388371680 is about 729.5961236264.

The spelling of 388371680 in words is "three hundred eighty-eight million, three hundred seventy-one thousand, six hundred eighty".