23820728 has 16 divisors (see below), whose sum is σ = 45614880. Its totient is φ = 11656768.

The previous prime is 23820701. The next prime is 23820733. The reversal of 23820728 is 82702832.

It is a junction number, because it is equal to n+sod(n) for n = 23820694 and 23820703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31301 + ... + 32052.

It is an arithmetic number, because the mean of its divisors is an integer number (2850930).

Almost surely, 2^23820728 is an apocalyptic number.

It is an amenable number.

23820728 is a deficient number, since it is larger than the sum of its proper divisors (21794152).

23820728 is a wasteful number, since it uses less digits than its factorization.

23820728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63406 (or 63402 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 23820728 is about 4880.6483175906. The cubic root of 23820728 is about 287.7299101087.

The spelling of 23820728 in words is "twenty-three million, eight hundred twenty thousand, seven hundred twenty-eight".