20326305 has 32 divisors (see below), whose sum is σ = 34905600. Its totient is φ = 10063872.

The previous prime is 20326291. The next prime is 20326307. The reversal of 20326305 is 50362302.

It is not a de Polignac number, because 20326305 - 2⁷ = 20326177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20326307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19641 + ... + 20649.

It is an arithmetic number, because the mean of its divisors is an integer number (1090800).

Almost surely, 2^20326305 is an apocalyptic number.

It is an amenable number.

20326305 is a deficient number, since it is larger than the sum of its proper divisors (14579295).

20326305 is a wasteful number, since it uses less digits than its factorization.

20326305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20326305 is about 4508.4703614419. The cubic root of 20326305 is about 272.9100187828.

Adding to 20326305 its reverse (50362302), we get a palindrome (70688607).

The spelling of 20326305 in words is "twenty million, three hundred twenty-six thousand, three hundred five".