385715616 has 96 divisors (see below), whose sum is σ = 1189556928. Its totient is φ = 107888640.

The previous prime is 385715611. The next prime is 385715651. The reversal of 385715616 is 616517583.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (385715611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 27776.

It is an arithmetic number, because the mean of its divisors is an integer number (12391218).

Almost surely, 2^385715616 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 385715616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594778464).

385715616 is an abundant number, since it is smaller than the sum of its proper divisors (803841312).

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

385715616 is a wasteful number, since it uses less digits than its factorization.

385715616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28134 (or 28126 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 385715616 is about 19639.6439886267. The cubic root of 385715616 is about 727.9290878077.

The spelling of 385715616 in words is "three hundred eighty-five million, seven hundred fifteen thousand, six hundred sixteen".