23913128 has 8 divisors (see below), whose sum is σ = 44837130. Its totient is φ = 11956560.

The previous prime is 23913103. The next prime is 23913157. The reversal of 23913128 is 82131932.

It can be written as a sum of positive squares in only one way, i.e., 20593444 + 3319684 = 4538^2 + 1822^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 23913128.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494563 + ... + 1494578.

Almost surely, 2^23913128 is an apocalyptic number.

It is an amenable number.

23913128 is a deficient number, since it is larger than the sum of its proper divisors (20924002).

23913128 is a wasteful number, since it uses less digits than its factorization.

23913128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989147 (or 2989143 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 23913128 is about 4890.1051113447. The cubic root of 23913128 is about 288.1014624502.

The spelling of 23913128 in words is "twenty-three million, nine hundred thirteen thousand, one hundred twenty-eight".