23985305 has 4 divisors (see below), whose sum is σ = 28782372. Its totient is φ = 19188240.

The previous prime is 23985281. The next prime is 23985307. The reversal of 23985305 is 50358932.

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 18913801 + 5071504 = 4349^2 + 2252^2 .

It is not a de Polignac number, because 23985305 - 2¹⁰ = 23984281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23985307) 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, 2398526 + ... + 2398535.

It is an arithmetic number, because the mean of its divisors is an integer number (7195593).

Almost surely, 2^23985305 is an apocalyptic number.

It is an amenable number.

23985305 is a deficient number, since it is larger than the sum of its proper divisors (4797067).

23985305 is an equidigital number, since it uses as much as digits as its factorization.

23985305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797066.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 23985305 is about 4897.4794537599. The cubic root of 23985305 is about 288.3910302156.

The spelling of 23985305 in words is "twenty-three million, nine hundred eighty-five thousand, three hundred five".