20530204 has 12 divisors (see below), whose sum is σ = 36383200. Its totient is φ = 10135008.

The previous prime is 20530201. The next prime is 20530219. The reversal of 20530204 is 40203502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530201) 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, 32169 + ... + 32800.

Almost surely, 2^20530204 is an apocalyptic number.

It is an amenable number.

20530204 is a deficient number, since it is larger than the sum of its proper divisors (15852996).

20530204 is a wasteful number, since it uses less digits than its factorization.

20530204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65052 (or 65050 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20530204 is about 4531.0268151932. The cubic root of 20530204 is about 273.8195305823.

Adding to 20530204 its reverse (40203502), we get a palindrome (60733706).

The spelling of 20530204 in words is "twenty million, five hundred thirty thousand, two hundred four".