20130395 has 4 divisors (see below), whose sum is σ = 24156480. Its totient is φ = 16104312.

The previous prime is 20130391. The next prime is 20130403. The reversal of 20130395 is 59303102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20130395 - 2² = 20130391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20130395.

It is not an unprimeable number, because it can be changed into a prime (20130391) by changing a digit.

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, 2013035 + ... + 2013044.

It is an arithmetic number, because the mean of its divisors is an integer number (6039120).

Almost surely, 2^20130395 is an apocalyptic number.

20130395 is a deficient number, since it is larger than the sum of its proper divisors (4026085).

20130395 is an equidigital number, since it uses as much as digits as its factorization.

20130395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026084.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 20130395 is about 4486.6908741298. The cubic root of 20130395 is about 272.0303950679.

Adding to 20130395 its reverse (59303102), we get a palindrome (79433497).

The spelling of 20130395 in words is "twenty million, one hundred thirty thousand, three hundred ninety-five".