20385342 has 12 divisors (see below), whose sum is σ = 44168280. Its totient is φ = 6795108.

The previous prime is 20385341. The next prime is 20385349. The reversal of 20385342 is 24358302.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566242 + ... + 566277.

It is an arithmetic number, because the mean of its divisors is an integer number (3680690).

Almost surely, 2^20385342 is an apocalyptic number.

20385342 is an abundant number, since it is smaller than the sum of its proper divisors (23782938).

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

20385342 is a wasteful number, since it uses less digits than its factorization.

20385342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132527 (or 1132524 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20385342 is about 4515.0129567920. The cubic root of 20385342 is about 273.1739824037.

The spelling of 20385342 in words is "twenty million, three hundred eighty-five thousand, three hundred forty-two".