388500385 has 32 divisors (see below), whose sum is σ = 593591040. Its totient is φ = 237420288.

The previous prime is 388500377. The next prime is 388500403. The reversal of 388500385 is 583005883.

It is not a de Polignac number, because 388500385 - 2³ = 388500377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1527 + ... + 27916.

It is an arithmetic number, because the mean of its divisors is an integer number (18549720).

Almost surely, 2^388500385 is an apocalyptic number.

388500385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388500385 is a deficient number, since it is larger than the sum of its proper divisors (205090655).

388500385 is a wasteful number, since it uses less digits than its factorization.

388500385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29497.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 388500385 is about 19710.4131108407. The cubic root of 388500385 is about 729.6767099160.

The spelling of 388500385 in words is "three hundred eighty-eight million, five hundred thousand, three hundred eighty-five".