385031028 has 96 divisors (see below), whose sum is σ = 1011225600. Its totient is φ = 113412096.

The previous prime is 385031021. The next prime is 385031051. The reversal of 385031028 is 820130583.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 385030986 and 385031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385031021) 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 31 ways as a sum of consecutive naturals, for example, 218013 + ... + 219771.

It is an arithmetic number, because the mean of its divisors is an integer number (10533600).

Almost surely, 2^385031028 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 385031028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505612800).

385031028 is an abundant number, since it is smaller than the sum of its proper divisors (626194572).

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

385031028 is a wasteful number, since it uses less digits than its factorization.

385031028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 385031028 is about 19622.2075210716. The cubic root of 385031028 is about 727.4981773906.

The spelling of 385031028 in words is "three hundred eighty-five million, thirty-one thousand, twenty-eight".