23915728 has 20 divisors (see below), whose sum is σ = 46426468. Its totient is φ = 11934720.

The previous prime is 23915713. The next prime is 23915729. The reversal of 23915728 is 82751932.

It can be written as a sum of positive squares in 2 ways, for example, as 12027024 + 11888704 = 3468^2 + 3448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23915729) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9658 + ... + 11878.

Almost surely, 2^23915728 is an apocalyptic number.

It is an amenable number.

23915728 is a deficient number, since it is larger than the sum of its proper divisors (22510740).

23915728 is a wasteful number, since it uses less digits than its factorization.

23915728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902 (or 2896 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 23915728 is about 4890.3709470755. The cubic root of 23915728 is about 288.1119035303. Note that the first 3 decimals are identical.

The spelling of 23915728 in words is "twenty-three million, nine hundred fifteen thousand, seven hundred twenty-eight".