388379740 has 24 divisors (see below), whose sum is σ = 932111712. Its totient is φ = 133158720.

The previous prime is 388379723. The next prime is 388379759. The reversal of 388379740 is 47973883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386931 + ... + 1387210.

It is an arithmetic number, because the mean of its divisors is an integer number (38837988).

Almost surely, 2^388379740 is an apocalyptic number.

It is an amenable number.

388379740 is an abundant number, since it is smaller than the sum of its proper divisors (543731972).

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

388379740 is a wasteful number, since it uses less digits than its factorization.

388379740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774157 (or 2774155 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 388379740 is about 19707.3524350685. The cubic root of 388379740 is about 729.6011707710.

The spelling of 388379740 in words is "three hundred eighty-eight million, three hundred seventy-nine thousand, seven hundred forty".