20389204 has 48 divisors (see below), whose sum is σ = 42436800. Its totient is φ = 8477280.

The previous prime is 20389169. The next prime is 20389207. The reversal of 20389204 is 40298302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20389207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 703062 + ... + 703090.

It is an arithmetic number, because the mean of its divisors is an integer number (884100).

Almost surely, 2^20389204 is an apocalyptic number.

It is an amenable number.

20389204 is an abundant number, since it is smaller than the sum of its proper divisors (22047596).

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

20389204 is a wasteful number, since it uses less digits than its factorization.

20389204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20389204 is about 4515.4406208032. The cubic root of 20389204 is about 273.1912322379.

The spelling of 20389204 in words is "twenty million, three hundred eighty-nine thousand, two hundred four".