20326427 has 6 divisors (see below), whose sum is σ = 22342404. Its totient is φ = 18478460.

The previous prime is 20326381. The next prime is 20326433. The reversal of 20326427 is 72462302.

It is not a de Polignac number, because 20326427 - 2⁶ = 20326363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20326396 and 20326405.

It is not an unprimeable number, because it can be changed into a prime (20326627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83873 + ... + 84114.

It is an arithmetic number, because the mean of its divisors is an integer number (3723734).

Almost surely, 2^20326427 is an apocalyptic number.

20326427 is a deficient number, since it is larger than the sum of its proper divisors (2015977).

20326427 is a wasteful number, since it uses less digits than its factorization.

20326427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168009 (or 167998 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 20326427 is about 4508.4838915094. The cubic root of 20326427 is about 272.9105647905.

Adding to 20326427 its reverse (72462302), we get a palindrome (92788729).

The spelling of 20326427 in words is "twenty million, three hundred twenty-six thousand, four hundred twenty-seven".