20395395 has 20 divisors (see below), whose sum is σ = 36561360. Its totient is φ = 10877328.

The previous prime is 20395363. The next prime is 20395421. The reversal of 20395395 is 59359302.

It is not a de Polignac number, because 20395395 - 2⁵ = 20395363 is a prime.

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 19 ways as a sum of consecutive naturals, for example, 24775 + ... + 25584.

It is an arithmetic number, because the mean of its divisors is an integer number (1828068).

Almost surely, 2^20395395 is an apocalyptic number.

20395395 is a deficient number, since it is larger than the sum of its proper divisors (16165965).

20395395 is an equidigital number, since it uses as much as digits as its factorization.

20395395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50376 (or 50367 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 36.

The square root of 20395395 is about 4516.1261054138. The cubic root of 20395395 is about 273.2188801336.

The spelling of 20395395 in words is "twenty million, three hundred ninety-five thousand, three hundred ninety-five".