385520252 has 12 divisors (see below), whose sum is σ = 726557496. Its totient is φ = 177932400.

The previous prime is 385520243. The next prime is 385520257. The reversal of 385520252 is 252025583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385520257) 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 3 ways as a sum of consecutive naturals, for example, 3706874 + ... + 3706977.

It is an arithmetic number, because the mean of its divisors is an integer number (60546458).

Almost surely, 2^385520252 is an apocalyptic number.

It is an amenable number.

385520252 is a deficient number, since it is larger than the sum of its proper divisors (341037244).

385520252 is a wasteful number, since it uses less digits than its factorization.

385520252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7413868 (or 7413866 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 385520252 is about 19634.6696432611. The cubic root of 385520252 is about 727.8061689619.

The spelling of 385520252 in words is "three hundred eighty-five million, five hundred twenty thousand, two hundred fifty-two".