20207089 has 16 divisors (see below), whose sum is σ = 24508800. Its totient is φ = 16274304.

The previous prime is 20207081. The next prime is 20207093. The reversal of 20207089 is 98070202.

It is a cyclic number.

It is not a de Polignac number, because 20207089 - 2³ = 20207081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20207081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17667 + ... + 18775.

It is an arithmetic number, because the mean of its divisors is an integer number (1531800).

Almost surely, 2^20207089 is an apocalyptic number.

It is an amenable number.

20207089 is a deficient number, since it is larger than the sum of its proper divisors (4301711).

20207089 is a wasteful number, since it uses less digits than its factorization.

20207089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 20207089 is about 4495.2295825686. The cubic root of 20207089 is about 272.3754232353.

The spelling of 20207089 in words is "twenty million, two hundred seven thousand, eighty-nine".