20000385 has 16 divisors (see below), whose sum is σ = 35556480. Its totient is φ = 10666800.

The previous prime is 20000377. The next prime is 20000389. The reversal of 20000385 is 58300002.

It is not a de Polignac number, because 20000385 - 2³ = 20000377 is a prime.

20000385 is a modest number, since divided by 385 gives 20 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20000389) 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, 73941 + ... + 74210.

It is an arithmetic number, because the mean of its divisors is an integer number (2222280).

Almost surely, 2^20000385 is an apocalyptic number.

It is an amenable number.

20000385 is a deficient number, since it is larger than the sum of its proper divisors (15556095).

20000385 is a wasteful number, since it uses less digits than its factorization.

20000385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148165 (or 148159 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20000385 is about 4472.1789991010. The cubic root of 20000385 is about 271.4435033996.

Adding to 20000385 its reverse (58300002), we get a palindrome (78300387).

The spelling of 20000385 in words is "twenty million, three hundred eighty-five", and thus it is an aban number.