387871312 has 20 divisors (see below), whose sum is σ = 751870900. Its totient is φ = 193840128.

The previous prime is 387871291. The next prime is 387871321. The reversal of 387871312 is 213178783.

It can be written as a sum of positive squares in 2 ways, for example, as 289544256 + 98327056 = 17016^2 + 9916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36814 + ... + 46162.

It is an arithmetic number, because the mean of its divisors is an integer number (37593545).

Almost surely, 2^387871312 is an apocalyptic number.

It is an amenable number.

387871312 is a deficient number, since it is larger than the sum of its proper divisors (363999588).

387871312 is a wasteful number, since it uses less digits than its factorization.

387871312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11950 (or 11944 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 387871312 is about 19694.4487610088. The cubic root of 387871312 is about 729.2826580597.

The spelling of 387871312 in words is "three hundred eighty-seven million, eight hundred seventy-one thousand, three hundred twelve".