387387128 has 16 divisors (see below), whose sum is σ = 727597080. Its totient is φ = 193361248.

The previous prime is 387387127. The next prime is 387387157. The reversal of 387387128 is 821783783.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387387127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36551 + ... + 45942.

Almost surely, 2^387387128 is an apocalyptic number.

It is an amenable number.

387387128 is a deficient number, since it is larger than the sum of its proper divisors (340209952).

387387128 is a wasteful number, since it uses less digits than its factorization.

387387128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83086 (or 83082 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 387387128 is about 19682.1525245589. The cubic root of 387387128 is about 728.9790745303.

The spelling of 387387128 in words is "three hundred eighty-seven million, three hundred eighty-seven thousand, one hundred twenty-eight".