387881904 has 40 divisors (see below), whose sum is σ = 1004009152. Its totient is φ = 129038400.

The previous prime is 387881899. The next prime is 387881917. The reversal of 387881904 is 409188783.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 17379 + ... + 32829.

Almost surely, 2^387881904 is an apocalyptic number.

It is an amenable number.

387881904 is an abundant number, since it is smaller than the sum of its proper divisors (616127248).

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

387881904 is a wasteful number, since it uses less digits than its factorization.

387881904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15985 (or 15979 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 387881904 is about 19694.7176674356. The cubic root of 387881904 is about 729.2892964227.

The spelling of 387881904 in words is "three hundred eighty-seven million, eight hundred eighty-one thousand, nine hundred four".