23087089 has 4 divisors (see below), whose sum is σ = 23098356. Its totient is φ = 23075824.

The previous prime is 23087083. The next prime is 23087107. The reversal of 23087089 is 98078032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8456464 + 14630625 = 2908^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 23087089 - 2⁷ = 23086961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23087083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594 + ... + 6979.

It is an arithmetic number, because the mean of its divisors is an integer number (5774589).

Almost surely, 2^23087089 is an apocalyptic number.

It is an amenable number.

23087089 is a deficient number, since it is larger than the sum of its proper divisors (11267).

23087089 is an equidigital number, since it uses as much as digits as its factorization.

23087089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11266.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 23087089 is about 4804.9026004696. The cubic root of 23087089 is about 284.7451872444.

The spelling of 23087089 in words is "twenty-three million, eighty-seven thousand, eighty-nine".