387810864 has 60 divisors (see below), whose sum is σ = 1240382416. Its totient is φ = 110802816.

The previous prime is 387810847. The next prime is 387810869. The reversal of 387810864 is 468018783.

It is not an unprimeable number, because it can be changed into a prime (387810869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191359 + ... + 193374.

Almost surely, 2^387810864 is an apocalyptic number.

It is an amenable number.

387810864 is an abundant number, since it is smaller than the sum of its proper divisors (852571552).

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

387810864 is a wasteful number, since it uses less digits than its factorization.

387810864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384754 (or 384745 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 387810864 is about 19692.9140555683. The cubic root of 387810864 is about 729.2447709504.

The spelling of 387810864 in words is "three hundred eighty-seven million, eight hundred ten thousand, eight hundred sixty-four".