385720724 has 12 divisors (see below), whose sum is σ = 696786048. Its totient is φ = 186639000.

The previous prime is 385720721. The next prime is 385720771. The reversal of 385720724 is 427027583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385720721) 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, 1555202 + ... + 1555449.

It is an arithmetic number, because the mean of its divisors is an integer number (58065504).

Almost surely, 2^385720724 is an apocalyptic number.

It is an amenable number.

385720724 is a deficient number, since it is larger than the sum of its proper divisors (311065324).

385720724 is a wasteful number, since it uses less digits than its factorization.

385720724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110686 (or 3110684 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 385720724 is about 19639.7740312866. The cubic root of 385720724 is about 727.9323010951.

The spelling of 385720724 in words is "three hundred eighty-five million, seven hundred twenty thousand, seven hundred twenty-four".