20192538 has 8 divisors (see below), whose sum is σ = 40385088. Its totient is φ = 6730844.

The previous prime is 20192537. The next prime is 20192561. The reversal of 20192538 is 83529102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

20192538 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20192537) by changing a digit.

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, 1682706 + ... + 1682717.

It is an arithmetic number, because the mean of its divisors is an integer number (5048136).

Almost surely, 2^20192538 is an apocalyptic number.

20192538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20192538 is a wasteful number, since it uses less digits than its factorization.

20192538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365428.

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

The square root of 20192538 is about 4493.6107975658. The cubic root of 20192538 is about 272.3100289160.

The spelling of 20192538 in words is "twenty million, one hundred ninety-two thousand, five hundred thirty-eight".