20542204 has 12 divisors (see below), whose sum is σ = 35981064. Its totient is φ = 10261904.

The previous prime is 20542201. The next prime is 20542213. The reversal of 20542204 is 40224502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542201) 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, 6282 + ... + 8974.

It is an arithmetic number, because the mean of its divisors is an integer number (2998422).

Almost surely, 2^20542204 is an apocalyptic number.

It is an amenable number.

20542204 is a deficient number, since it is larger than the sum of its proper divisors (15438860).

20542204 is a wasteful number, since it uses less digits than its factorization.

20542204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20542204 is about 4532.3508249031. The cubic root of 20542204 is about 273.8728697889.

Adding to 20542204 its reverse (40224502), we get a palindrome (60766706).

The spelling of 20542204 in words is "twenty million, five hundred forty-two thousand, two hundred four".