388871028 has 216 divisors, whose sum is σ = 1272555648. Its totient is φ = 97853184.

The previous prime is 388871027. The next prime is 388871033. The reversal of 388871028 is 820178883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388871027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 979326 + ... + 979722.

Almost surely, 2^388871028 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 388871028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636277824).

388871028 is an abundant number, since it is smaller than the sum of its proper divisors (883684620).

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

388871028 is a wasteful number, since it uses less digits than its factorization.

388871028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 388871028 is about 19719.8130822784. The cubic root of 388871028 is about 729.9086818905.

The spelling of 388871028 in words is "three hundred eighty-eight million, eight hundred seventy-one thousand, twenty-eight".