20195329 has 16 divisors (see below), whose sum is σ = 25796736. Its totient is φ = 15350400.

The previous prime is 20195297. The next prime is 20195363. The reversal of 20195329 is 92359102.

It is not a de Polignac number, because 20195329 - 2⁵ = 20195297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20195329.

It is not an unprimeable number, because it can be changed into a prime (20195369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42 + ... + 6355.

It is an arithmetic number, because the mean of its divisors is an integer number (1612296).

Almost surely, 2^20195329 is an apocalyptic number.

It is an amenable number.

20195329 is a deficient number, since it is larger than the sum of its proper divisors (5601407).

20195329 is a wasteful number, since it uses less digits than its factorization.

20195329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 20195329 is about 4493.9213388754. The cubic root of 20195329 is about 272.3225745121.

The spelling of 20195329 in words is "twenty million, one hundred ninety-five thousand, three hundred twenty-nine".