20326105 has 12 divisors (see below), whose sum is σ = 25744932. Its totient is φ = 15403680.

The previous prime is 20326099. The next prime is 20326157. The reversal of 20326105 is 50162302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15468489 + 4857616 = 3933^2 + 2204^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20326105 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 3826 + ... + 7435.

It is an arithmetic number, because the mean of its divisors is an integer number (2145411).

Almost surely, 2^20326105 is an apocalyptic number.

It is an amenable number.

20326105 is a deficient number, since it is larger than the sum of its proper divisors (5418827).

20326105 is a wasteful number, since it uses less digits than its factorization.

20326105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304 (or 11285 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20326105 is about 4508.4481809155. The cubic root of 20326105 is about 272.9091236836.

Adding to 20326105 its reverse (50162302), we get a palindrome (70488407).

The spelling of 20326105 in words is "twenty million, three hundred twenty-six thousand, one hundred five".