23688089 has 4 divisors (see below), whose sum is σ = 25081524. Its totient is φ = 22294656.

The previous prime is 23688083. The next prime is 23688097. The reversal of 23688089 is 98088632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18361225 + 5326864 = 4285^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 23688089 - 2¹² = 23683993 is a prime.

It is a super-2 number, since 2×23688089² = 1122251120943842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23688083) 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, 696692 + ... + 696725.

It is an arithmetic number, because the mean of its divisors is an integer number (6270381).

Almost surely, 2^23688089 is an apocalyptic number.

It is an amenable number.

23688089 is a deficient number, since it is larger than the sum of its proper divisors (1393435).

23688089 is a wasteful number, since it uses less digits than its factorization.

23688089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393434.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 23688089 is about 4867.0410929023. The cubic root of 23688089 is about 287.1948682041.

The spelling of 23688089 in words is "twenty-three million, six hundred eighty-eight thousand, eighty-nine".