387643264 has 32 divisors (see below), whose sum is σ = 773262000. Its totient is φ = 193569792.

The previous prime is 387643253. The next prime is 387643273. The reversal of 387643264 is 462346783.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 387643264.

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, 132829 + ... + 135715.

Almost surely, 2^387643264 is an apocalyptic number.

It is an amenable number.

387643264 is a deficient number, since it is larger than the sum of its proper divisors (385618736).

387643264 is a wasteful number, since it uses less digits than its factorization.

387643264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950 (or 3938 counting only the distinct ones).

The product of its digits is 580608, while the sum is 43.

The square root of 387643264 is about 19688.6582579921. The cubic root of 387643264 is about 729.1397033810.

The spelling of 387643264 in words is "three hundred eighty-seven million, six hundred forty-three thousand, two hundred sixty-four".