20032664 has 16 divisors (see below), whose sum is σ = 39771000. Its totient is φ = 9427072.

The previous prime is 20032637. The next prime is 20032667. The reversal of 20032664 is 46623002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73514 + ... + 73785.

Almost surely, 2^20032664 is an apocalyptic number.

It is an amenable number.

20032664 is a deficient number, since it is larger than the sum of its proper divisors (19738336).

20032664 is a wasteful number, since it uses less digits than its factorization.

20032664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147322 (or 147318 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20032664 is about 4475.7864113472. The cubic root of 20032664 is about 271.5894541799.

Adding to 20032664 its reverse (46623002), we get a palindrome (66655666).

The spelling of 20032664 in words is "twenty million, thirty-two thousand, six hundred sixty-four".