385228624 has 20 divisors (see below), whose sum is σ = 814233600. Its totient is φ = 175103840.

The previous prime is 385228621. The next prime is 385228637. The reversal of 385228624 is 426822583.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385228621) 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, 1094224 + ... + 1094575.

It is an arithmetic number, because the mean of its divisors is an integer number (40711680).

Almost surely, 2^385228624 is an apocalyptic number.

It is an amenable number.

385228624 is an abundant number, since it is smaller than the sum of its proper divisors (429004976).

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

385228624 is a wasteful number, since it uses less digits than its factorization.

385228624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188818 (or 2188812 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 385228624 is about 19627.2418846867. The cubic root of 385228624 is about 727.6226055844.

The spelling of 385228624 in words is "three hundred eighty-five million, two hundred twenty-eight thousand, six hundred twenty-four".