385322864 has 40 divisors (see below), whose sum is σ = 792270720. Its totient is φ = 181151168.

The previous prime is 385322849. The next prime is 385322891. The reversal of 385322864 is 468223583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12839 + ... + 30585.

It is an arithmetic number, because the mean of its divisors is an integer number (19806768).

Almost surely, 2^385322864 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 385322864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396135360).

385322864 is an abundant number, since it is smaller than the sum of its proper divisors (406947856).

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

385322864 is a wasteful number, since it uses less digits than its factorization.

385322864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17837 (or 17831 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 385322864 is about 19629.6424827351. The cubic root of 385322864 is about 727.6819344775.

The spelling of 385322864 in words is "three hundred eighty-five million, three hundred twenty-two thousand, eight hundred sixty-four".