20326605 has 16 divisors (see below), whose sum is σ = 35024640. Its totient is φ = 10006848.

The previous prime is 20326591. The next prime is 20326627. The reversal of 20326605 is 50662302.

It is not a de Polignac number, because 20326605 - 2⁸ = 20326349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51925 + ... + 52314.

It is an arithmetic number, because the mean of its divisors is an integer number (2189040).

Almost surely, 2^20326605 is an apocalyptic number.

It is an amenable number.

20326605 is a deficient number, since it is larger than the sum of its proper divisors (14698035).

20326605 is a wasteful number, since it uses less digits than its factorization.

20326605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104260.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20326605 is about 4508.5036320269. The cubic root of 20326605 is about 272.9113614207.

Adding to 20326605 its reverse (50662302), we get a palindrome (70988907).

The spelling of 20326605 in words is "twenty million, three hundred twenty-six thousand, six hundred five".