23905144 has 8 divisors (see below), whose sum is σ = 44822160. Its totient is φ = 11952568.

The previous prime is 23905139. The next prime is 23905157. The reversal of 23905144 is 44150932.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1494064 + ... + 1494079.

It is an arithmetic number, because the mean of its divisors is an integer number (5602770).

Almost surely, 2^23905144 is an apocalyptic number.

It is an amenable number.

23905144 is a deficient number, since it is larger than the sum of its proper divisors (20917016).

23905144 is a wasteful number, since it uses less digits than its factorization.

23905144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988149 (or 2988145 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 23905144 is about 4889.2887008235. The cubic root of 23905144 is about 288.0693955716.

The spelling of 23905144 in words is "twenty-three million, nine hundred five thousand, one hundred forty-four".