20235089 has 12 divisors (see below), whose sum is σ = 23865444. Its totient is φ = 17103744.

The previous prime is 20235077. The next prime is 20235097. The reversal of 20235089 is 98053202.

It can be written as a sum of positive squares in 2 ways, for example, as 6210064 + 14025025 = 2492^2 + 3745^2 .

It is not a de Polignac number, because 20235089 - 2⁸ = 20234833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20235889) 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 11 ways as a sum of consecutive naturals, for example, 749 + ... + 6405.

It is an arithmetic number, because the mean of its divisors is an integer number (1988787).

Almost surely, 2^20235089 is an apocalyptic number.

It is an amenable number.

20235089 is a deficient number, since it is larger than the sum of its proper divisors (3630355).

20235089 is an equidigital number, since it uses as much as digits as its factorization.

20235089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744 (or 5737 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20235089 is about 4498.3429171196. The cubic root of 20235089 is about 272.5011710524.

The spelling of 20235089 in words is "twenty million, two hundred thirty-five thousand, eighty-nine".