387681888 has 48 divisors (see below), whose sum is σ = 1110182976. Its totient is φ = 117479040.

The previous prime is 387681881. The next prime is 387681907. The reversal of 387681888 is 888186783.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387681881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182506 + ... + 184617.

It is an arithmetic number, because the mean of its divisors is an integer number (23128812).

Almost surely, 2^387681888 is an apocalyptic number.

It is an amenable number.

387681888 is an abundant number, since it is smaller than the sum of its proper divisors (722501088).

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

387681888 is a wasteful number, since it uses less digits than its factorization.

387681888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367147 (or 367139 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 57.

The square root of 387681888 is about 19689.6391028378. The cubic root of 387681888 is about 729.1639192510.

The spelling of 387681888 in words is "three hundred eighty-seven million, six hundred eighty-one thousand, eight hundred eighty-eight".