23178089 has 24 divisors (see below), whose sum is σ = 28116288. Its totient is φ = 18909440.

The previous prime is 23178083. The next prime is 23178121. The reversal of 23178089 is 98087132.

It is not a de Polignac number, because 23178089 - 2⁴ = 23178073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23178083) 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 23 ways as a sum of consecutive naturals, for example, 72959 + ... + 73275.

It is an arithmetic number, because the mean of its divisors is an integer number (1171512).

Almost surely, 2^23178089 is an apocalyptic number.

It is an amenable number.

23178089 is a deficient number, since it is larger than the sum of its proper divisors (4938199).

23178089 is a wasteful number, since it uses less digits than its factorization.

23178089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 23178089 is about 4814.3627823420. The cubic root of 23178089 is about 285.1188137008.

The spelling of 23178089 in words is "twenty-three million, one hundred seventy-eight thousand, eighty-nine".