20665052 has 18 divisors (see below), whose sum is σ = 37459968. Its totient is φ = 9974608.

The previous prime is 20665039. The next prime is 20665067. The reversal of 20665052 is 25056602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293 + ... + 6435.

Almost surely, 2^20665052 is an apocalyptic number.

It is an amenable number.

20665052 is a deficient number, since it is larger than the sum of its proper divisors (16794916).

20665052 is a wasteful number, since it uses less digits than its factorization.

20665052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205 (or 6174 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20665052 is about 4545.8829725368. The cubic root of 20665052 is about 274.4177299868.

The spelling of 20665052 in words is "twenty million, six hundred sixty-five thousand, fifty-two".