385187928424 has 64 divisors (see below), whose sum is σ = 801533129040. Its totient is φ = 172383344640.

The previous prime is 385187928421. The next prime is 385187928479. The reversal of 385187928424 is 424829781583.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 366487365924 + 18700562500 = 605382^2 + 136750^2 .

It is not an unprimeable number, because it can be changed into a prime (385187928421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 956644 + ... + 1298284.

Almost surely, 2^385187928424 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 385187928424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400766564520).

385187928424 is an abundant number, since it is smaller than the sum of its proper divisors (416345200616).

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

385187928424 is a wasteful number, since it uses less digits than its factorization.

385187928424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341990 (or 341986 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 385187928424 in words is "three hundred eighty-five billion, one hundred eighty-seven million, nine hundred twenty-eight thousand, four hundred twenty-four".