20028890589 has 8 divisors (see below), whose sum is σ = 26706108960. Its totient is φ = 13352132976.

The previous prime is 20028890569. The next prime is 20028890597. The reversal of 20028890589 is 98509882002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20028890589 - 2²⁰ = 20027842013 is a prime.

It is a super-2 number, since 2×20028890589² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20028890549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 200180.

It is an arithmetic number, because the mean of its divisors is an integer number (3338263620).

Almost surely, 2^20028890589 is an apocalyptic number.

It is an amenable number.

20028890589 is a deficient number, since it is larger than the sum of its proper divisors (6677218371).

20028890589 is a wasteful number, since it uses less digits than its factorization.

20028890589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230379.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 20028890589 in words is "twenty billion, twenty-eight million, eight hundred ninety thousand, five hundred eighty-nine".