388340788 has 18 divisors (see below), whose sum is σ = 746995298. Its totient is φ = 176518320.

The previous prime is 388340779. The next prime is 388340833. The reversal of 388340788 is 887043883.

It can be written as a sum of positive squares in only one way, i.e., 214681104 + 173659684 = 14652^2 + 13178^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400695 + ... + 401662.

Almost surely, 2^388340788 is an apocalyptic number.

It is an amenable number.

388340788 is a deficient number, since it is larger than the sum of its proper divisors (358654510).

388340788 is a wasteful number, since it uses less digits than its factorization.

388340788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802383 (or 802370 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 388340788 is about 19706.3641496852. The cubic root of 388340788 is about 729.5767785143.

The spelling of 388340788 in words is "three hundred eighty-eight million, three hundred forty thousand, seven hundred eighty-eight".