385128 has 32 divisors (see below), whose sum is σ = 1070400. Its totient is φ = 128304.

The previous prime is 385127. The next prime is 385129. The reversal of 385128 is 821583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (385127) and next prime (385129).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (385127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 1107.

It is an arithmetic number, because the mean of its divisors is an integer number (33450).

2³⁸⁵¹²⁸ is an apocalyptic number.

It is an amenable number.

385128 is an abundant number, since it is smaller than the sum of its proper divisors (685272).

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

385128 is a wasteful number, since it uses less digits than its factorization.

385128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1788 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 385128 is about 620.5868190672. The cubic root of 385128 is about 72.7559246955.

The spelling of 385128 in words is "three hundred eighty-five thousand, one hundred twenty-eight".