23722728 has 32 divisors (see below), whose sum is σ = 60026400. Its totient is φ = 7811648.

The previous prime is 23722709. The next prime is 23722753. The reversal of 23722728 is 82722732.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963 + ... + 7946.

It is an arithmetic number, because the mean of its divisors is an integer number (1875825).

Almost surely, 2^23722728 is an apocalyptic number.

It is an amenable number.

23722728 is an abundant number, since it is smaller than the sum of its proper divisors (36303672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23722728 is a wasteful number, since it uses less digits than its factorization.

23722728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12001 (or 11997 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 23722728 is about 4870.5983205352. The cubic root of 23722728 is about 287.3347880028.

The spelling of 23722728 in words is "twenty-three million, seven hundred twenty-two thousand, seven hundred twenty-eight".