388636252 has 12 divisors (see below), whose sum is σ = 720120240. Its totient is φ = 182887616.

The previous prime is 388636231. The next prime is 388636289. The reversal of 388636252 is 252636883.

It is a junction number, because it is equal to n+sod(n) for n = 388636199 and 388636208.

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, 2857552 + ... + 2857687.

It is an arithmetic number, because the mean of its divisors is an integer number (60010020).

Almost surely, 2^388636252 is an apocalyptic number.

It is an amenable number.

388636252 is a deficient number, since it is larger than the sum of its proper divisors (331483988).

388636252 is a wasteful number, since it uses less digits than its factorization.

388636252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715260 (or 5715258 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 388636252 is about 19713.8593887651. The cubic root of 388636252 is about 729.7617612524.

The spelling of 388636252 in words is "three hundred eighty-eight million, six hundred thirty-six thousand, two hundred fifty-two".