387643268 has 6 divisors (see below), whose sum is σ = 678375726. Its totient is φ = 193821632.

The previous prime is 387643253. The next prime is 387643273. The reversal of 387643268 is 862346783.

It can be written as a sum of positive squares in only one way, i.e., 387381124 + 262144 = 19682^2 + 512^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48455405 + ... + 48455412.

It is an arithmetic number, because the mean of its divisors is an integer number (113062621).

Almost surely, 2^387643268 is an apocalyptic number.

It is an amenable number.

387643268 is a deficient number, since it is larger than the sum of its proper divisors (290732458).

387643268 is a wasteful number, since it uses less digits than its factorization.

387643268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96910821 (or 96910819 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The square root of 387643268 is about 19688.6583595734. The cubic root of 387643268 is about 729.1397058889.

The spelling of 387643268 in words is "three hundred eighty-seven million, six hundred forty-three thousand, two hundred sixty-eight".