20327589 has 6 divisors (see below), whose sum is σ = 29362086. Its totient is φ = 13551720.

The previous prime is 20327509. The next prime is 20327603. The reversal of 20327589 is 98572302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13198689 + 7128900 = 3633^2 + 2670^2 .

It is not a de Polignac number, because 20327589 - 2²⁴ = 3550373 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20327509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1129302 + ... + 1129319.

It is an arithmetic number, because the mean of its divisors is an integer number (4893681).

Almost surely, 2^20327589 is an apocalyptic number.

It is an amenable number.

20327589 is a deficient number, since it is larger than the sum of its proper divisors (9034497).

20327589 is a wasteful number, since it uses less digits than its factorization.

20327589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258627 (or 2258624 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20327589 is about 4508.6127578225. The cubic root of 20327589 is about 272.9157651804.

The spelling of 20327589 in words is "twenty million, three hundred twenty-seven thousand, five hundred eighty-nine".