385520724 has 36 divisors (see below), whose sum is σ = 986259456. Its totient is φ = 126957648.

The previous prime is 385520719. The next prime is 385520731. The reversal of 385520724 is 427025583.

385520724 is a `hidden beast` number, since 38 + 552 + 0 + 72 + 4 = 666.

385520724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61524 + ... + 67499.

It is an arithmetic number, because the mean of its divisors is an integer number (27396096).

Almost surely, 2^385520724 is an apocalyptic number.

It is an amenable number.

385520724 is an abundant number, since it is smaller than the sum of its proper divisors (600738732).

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

385520724 is a wasteful number, since it uses less digits than its factorization.

385520724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129116 (or 129111 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 385520724 is about 19634.6816628129. The cubic root of 385520724 is about 727.8064659843.

The spelling of 385520724 in words is "three hundred eighty-five million, five hundred twenty thousand, seven hundred twenty-four".