20330364 has 12 divisors (see below), whose sum is σ = 47437544. Its totient is φ = 6776784.

The previous prime is 20330339. The next prime is 20330369. The reversal of 20330364 is 46303302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20330364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847087 + ... + 847110.

Almost surely, 2^20330364 is an apocalyptic number.

It is an amenable number.

20330364 is an abundant number, since it is smaller than the sum of its proper divisors (27107180).

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

20330364 is a wasteful number, since it uses less digits than its factorization.

20330364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694204 (or 1694202 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 20330364 is about 4508.9204916476. The cubic root of 20330364 is about 272.9281835540.

Adding to 20330364 its reverse (46303302), we get a palindrome (66633666).

The spelling of 20330364 in words is "twenty million, three hundred thirty thousand, three hundred sixty-four".