20138175 has 72 divisors (see below), whose sum is σ = 38591280. Its totient is φ = 10022400.

The previous prime is 20138171. The next prime is 20138191. The reversal of 20138175 is 57183102.

It is not a de Polignac number, because 20138175 - 2² = 20138171 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20138171) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 341296 + ... + 341354.

It is an arithmetic number, because the mean of its divisors is an integer number (535990).

Almost surely, 2^20138175 is an apocalyptic number.

20138175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20138175 is a deficient number, since it is larger than the sum of its proper divisors (18453105).

20138175 is a wasteful number, since it uses less digits than its factorization.

20138175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 20138175 is about 4487.5577990707. The cubic root of 20138175 is about 272.0654353454.

The spelling of 20138175 in words is "twenty million, one hundred thirty-eight thousand, one hundred seventy-five".