20088089 has 6 divisors (see below), whose sum is σ = 23367834. Its totient is φ = 17218320.

The previous prime is 20088071. The next prime is 20088119. The reversal of 20088089 is 98088002.

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 17689 = 4480^2 + 133^2 .

It is not a de Polignac number, because 20088089 - 2¹⁶ = 20022553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20088049) 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, 204932 + ... + 205029.

It is an arithmetic number, because the mean of its divisors is an integer number (3894639).

Almost surely, 2^20088089 is an apocalyptic number.

It is an amenable number.

20088089 is a deficient number, since it is larger than the sum of its proper divisors (3279745).

20088089 is an equidigital number, since it uses as much as digits as its factorization.

20088089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409975 (or 409968 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 20088089 is about 4481.9737839483. The cubic root of 20088089 is about 271.8396952263.

The spelling of 20088089 in words is "twenty million, eighty-eight thousand, eighty-nine".