20664132 has 24 divisors (see below), whose sum is σ = 48291936. Its totient is φ = 6877248.

The previous prime is 20664131. The next prime is 20664139. The reversal of 20664132 is 23146602.

It is not an unprimeable number, because it can be changed into a prime (20664131) 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 7 ways as a sum of consecutive naturals, for example, 11563 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (2012164).

Almost surely, 2^20664132 is an apocalyptic number.

It is an amenable number.

20664132 is an abundant number, since it is smaller than the sum of its proper divisors (27627804).

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

20664132 is a wasteful number, since it uses less digits than its factorization.

20664132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20664132 is about 4545.7817809481. The cubic root of 20664132 is about 274.4136576032.

The spelling of 20664132 in words is "twenty million, six hundred sixty-four thousand, one hundred thirty-two".