20538192 has 20 divisors (see below), whose sum is σ = 53057120. Its totient is φ = 6846048.

The previous prime is 20538187. The next prime is 20538211. The reversal of 20538192 is 29183502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 213892 + ... + 213987.

It is an arithmetic number, because the mean of its divisors is an integer number (2652856).

Almost surely, 2^20538192 is an apocalyptic number.

It is an amenable number.

20538192 is an abundant number, since it is smaller than the sum of its proper divisors (32518928).

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

20538192 is a wasteful number, since it uses less digits than its factorization.

20538192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427890 (or 427884 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20538192 is about 4531.9082073670. The cubic root of 20538192 is about 273.8550390262.

The spelling of 20538192 in words is "twenty million, five hundred thirty-eight thousand, one hundred ninety-two".