388256128 has 32 divisors (see below), whose sum is σ = 832980960. Its totient is φ = 179194368.

The previous prime is 388256107. The next prime is 388256161. The reversal of 388256128 is 821652883.

It is a tau number, because it is divible by the number of its divisors (32).

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, 115000 + ... + 118327.

It is an arithmetic number, because the mean of its divisors is an integer number (26030655).

Almost surely, 2^388256128 is an apocalyptic number.

It is an amenable number.

388256128 is an abundant number, since it is smaller than the sum of its proper divisors (444724832).

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

388256128 is a wasteful number, since it uses less digits than its factorization.

388256128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233354 (or 233342 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 388256128 is about 19704.2159955681. The cubic root of 388256128 is about 729.5237576789.

The spelling of 388256128 in words is "three hundred eighty-eight million, two hundred fifty-six thousand, one hundred twenty-eight".