23864913 has 12 divisors (see below), whose sum is σ = 34568820. Its totient is φ = 15865056.

The previous prime is 23864903. The next prime is 23864917. The reversal of 23864913 is 31946832.

23864913 is a `hidden beast` number, since 2 + 3 + 8 + 649 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 16064064 = 2793^2 + 4008^2 .

It is not a de Polignac number, because 23864913 - 2⁵ = 23864881 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23864917) 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 11 ways as a sum of consecutive naturals, for example, 198 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (2880735).

Almost surely, 2^23864913 is an apocalyptic number.

It is an amenable number.

23864913 is a deficient number, since it is larger than the sum of its proper divisors (10703907).

23864913 is a wasteful number, since it uses less digits than its factorization.

23864913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7488 (or 7485 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 23864913 is about 4885.1727707421. The cubic root of 23864913 is about 287.9077033527.

The spelling of 23864913 in words is "twenty-three million, eight hundred sixty-four thousand, nine hundred thirteen".