20089611 has 6 divisors (see below), whose sum is σ = 29018340. Its totient is φ = 13393068.

The previous prime is 20089609. The next prime is 20089613. The reversal of 20089611 is 11698002.

It is an interprime number because it is at equal distance from previous prime (20089609) and next prime (20089613).

It is not a de Polignac number, because 20089611 - 2¹ = 20089609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20089613) 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 5 ways as a sum of consecutive naturals, for example, 1116081 + ... + 1116098.

It is an arithmetic number, because the mean of its divisors is an integer number (4836390).

Almost surely, 2^20089611 is an apocalyptic number.

20089611 is a deficient number, since it is larger than the sum of its proper divisors (8928729).

20089611 is a wasteful number, since it uses less digits than its factorization.

20089611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232185 (or 2232182 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 20089611 is about 4482.1435719977. The cubic root of 20089611 is about 271.8465604814.

The spelling of 20089611 in words is "twenty million, eighty-nine thousand, six hundred eleven".