388687652 has 12 divisors (see below), whose sum is σ = 680398236. Its totient is φ = 194288160.

The previous prime is 388687639. The next prime is 388687661. The reversal of 388687652 is 256786883.

It can be written as a sum of positive squares in 2 ways, for example, as 309548836 + 79138816 = 17594^2 + 8896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 388687594 and 388687603.

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, 4502 + ... + 28242.

It is an arithmetic number, because the mean of its divisors is an integer number (56699853).

Almost surely, 2^388687652 is an apocalyptic number.

It is an amenable number.

388687652 is a deficient number, since it is larger than the sum of its proper divisors (291710584).

388687652 is a wasteful number, since it uses less digits than its factorization.

388687652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27838 (or 27836 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The square root of 388687652 is about 19715.1629970437. The cubic root of 388687652 is about 729.7939319525.

The spelling of 388687652 in words is "three hundred eighty-eight million, six hundred eighty-seven thousand, six hundred fifty-two".