385807305 has 32 divisors (see below), whose sum is σ = 666175104. Its totient is φ = 189536256.

The previous prime is 385807283. The next prime is 385807319. The reversal of 385807305 is 503708583.

It is not a de Polignac number, because 385807305 - 2¹¹ = 385805257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104857 + ... + 108473.

It is an arithmetic number, because the mean of its divisors is an integer number (20817972).

Almost surely, 2^385807305 is an apocalyptic number.

It is an amenable number.

385807305 is a deficient number, since it is larger than the sum of its proper divisors (280367799).

385807305 is a wasteful number, since it uses less digits than its factorization.

385807305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 385807305 is about 19641.9781335791. The cubic root of 385807305 is about 727.9867622527.

The spelling of 385807305 in words is "three hundred eighty-five million, eight hundred seven thousand, three hundred five".