385120128 has 32 divisors (see below), whose sum is σ = 1022976360. Its totient is φ = 128373248.

The previous prime is 385120069. The next prime is 385120129. The reversal of 385120128 is 821021583.

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

It is a junction number, because it is equal to n+sod(n) for n = 385120095 and 385120104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385120129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501075 + ... + 501842.

Almost surely, 2^385120128 is an apocalyptic number.

It is an amenable number.

385120128 is an abundant number, since it is smaller than the sum of its proper divisors (637856232).

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

385120128 is a wasteful number, since it uses less digits than its factorization.

385120128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002934 (or 1002922 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 385120128 is about 19624.4777764913. The cubic root of 385120128 is about 727.5542898279.

The spelling of 385120128 in words is "three hundred eighty-five million, one hundred twenty thousand, one hundred twenty-eight".