23855985 has 16 divisors (see below), whose sum is σ = 42410880. Its totient is φ = 12723120.

The previous prime is 23855983. The next prime is 23856029. The reversal of 23855985 is 58955832.

It is not a de Polignac number, because 23855985 - 2¹ = 23855983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23855985.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23855983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88221 + ... + 88490.

It is an arithmetic number, because the mean of its divisors is an integer number (2650680).

Almost surely, 2^23855985 is an apocalyptic number.

It is an amenable number.

23855985 is a deficient number, since it is larger than the sum of its proper divisors (18554895).

23855985 is a wasteful number, since it uses less digits than its factorization.

23855985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176725 (or 176719 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 23855985 is about 4884.2588997718. The cubic root of 23855985 is about 287.8717962369.

The spelling of 23855985 in words is "twenty-three million, eight hundred fifty-five thousand, nine hundred eighty-five".