388435656 has 64 divisors (see below), whose sum is σ = 1112417280. Its totient is φ = 110721600.

The previous prime is 388435651. The next prime is 388435721. The reversal of 388435656 is 656534883.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (388435651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75981 + ... + 80931.

It is an arithmetic number, because the mean of its divisors is an integer number (17381520).

Almost surely, 2^388435656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388435656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556208640).

388435656 is an abundant number, since it is smaller than the sum of its proper divisors (723981624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388435656 is a wasteful number, since it uses less digits than its factorization.

388435656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5430 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The square root of 388435656 is about 19708.7710423557. The cubic root of 388435656 is about 729.6361832577.

The spelling of 388435656 in words is "three hundred eighty-eight million, four hundred thirty-five thousand, six hundred fifty-six".