20326205 has 4 divisors (see below), whose sum is σ = 24391452. Its totient is φ = 16260960.

The previous prime is 20326183. The next prime is 20326213. The reversal of 20326205 is 50262302.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 6584356 = 3707^2 + 2566^2 .

It is not a de Polignac number, because 20326205 - 2²⁴ = 3548989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032616 + ... + 2032625.

It is an arithmetic number, because the mean of its divisors is an integer number (6097863).

Almost surely, 2^20326205 is an apocalyptic number.

It is an amenable number.

20326205 is a deficient number, since it is larger than the sum of its proper divisors (4065247).

20326205 is an equidigital number, since it uses as much as digits as its factorization.

20326205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065246.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20326205 is about 4508.4592711923. The cubic root of 20326205 is about 272.9095712339.

Adding to 20326205 its reverse (50262302), we get a palindrome (70588507).

The spelling of 20326205 in words is "twenty million, three hundred twenty-six thousand, two hundred five".