20375138 has 8 divisors (see below), whose sum is σ = 34928832. Its totient is φ = 8732196.

The previous prime is 20375101. The next prime is 20375167. The reversal of 20375138 is 83157302.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20375138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727670 + ... + 727697.

It is an arithmetic number, because the mean of its divisors is an integer number (4366104).

Almost surely, 2^20375138 is an apocalyptic number.

20375138 is a deficient number, since it is larger than the sum of its proper divisors (14553694).

20375138 is a wasteful number, since it uses less digits than its factorization.

20375138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455376.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20375138 is about 4513.8828075173. The cubic root of 20375138 is about 273.1283951947.

The spelling of 20375138 in words is "twenty million, three hundred seventy-five thousand, one hundred thirty-eight".