20590589 has 4 divisors (see below), whose sum is σ = 21485856. Its totient is φ = 19695324.

The previous prime is 20590579. The next prime is 20590597. The reversal of 20590589 is 98509502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20590589 - 2⁴ = 20590573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20590529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447599 + ... + 447644.

It is an arithmetic number, because the mean of its divisors is an integer number (5371464).

Almost surely, 2^20590589 is an apocalyptic number.

It is an amenable number.

20590589 is a deficient number, since it is larger than the sum of its proper divisors (895267).

20590589 is an equidigital number, since it uses as much as digits as its factorization.

20590589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895266.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 20590589 is about 4537.6854232086. The cubic root of 20590589 is about 274.0877274279.

The spelling of 20590589 in words is "twenty million, five hundred ninety thousand, five hundred eighty-nine".