388741788 has 96 divisors (see below), whose sum is σ = 1080414720. Its totient is φ = 120441600.

The previous prime is 388741777. The next prime is 388741823. The reversal of 388741788 is 887147883.

It is a super-2 number, since 2×388741788² = 302240355474873888, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151113 + ... + 153663.

It is an arithmetic number, because the mean of its divisors is an integer number (11254320).

Almost surely, 2^388741788 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 388741788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540207360).

388741788 is an abundant number, since it is smaller than the sum of its proper divisors (691672932).

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

388741788 is a wasteful number, since it uses less digits than its factorization.

388741788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664 (or 2656 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 388741788 is about 19716.5359026377. The cubic root of 388741788 is about 729.8278120188.

The spelling of 388741788 in words is "three hundred eighty-eight million, seven hundred forty-one thousand, seven hundred eighty-eight".