20088645 has 16 divisors (see below), whose sum is σ = 34032960. Its totient is φ = 10083584.

The previous prime is 20088631. The next prime is 20088659. The reversal of 20088645 is 54688002.

It is an interprime number because it is at equal distance from previous prime (20088631) and next prime (20088659).

It is not a de Polignac number, because 20088645 - 2⁵ = 20088613 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39135 + ... + 39644.

It is an arithmetic number, because the mean of its divisors is an integer number (2127060).

Almost surely, 2^20088645 is an apocalyptic number.

It is an amenable number.

20088645 is a deficient number, since it is larger than the sum of its proper divisors (13944315).

20088645 is a wasteful number, since it uses less digits than its factorization.

20088645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78804.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 20088645 is about 4482.0358097632. The cubic root of 20088645 is about 271.8422032046.

The spelling of 20088645 in words is "twenty million, eighty-eight thousand, six hundred forty-five".