23972728 has 16 divisors (see below), whose sum is σ = 48406680. Its totient is φ = 11064288.

The previous prime is 23972719. The next prime is 23972749. The reversal of 23972728 is 82727932.

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, 115150 + ... + 115357.

Almost surely, 2^23972728 is an apocalyptic number.

It is an amenable number.

23972728 is an abundant number, since it is smaller than the sum of its proper divisors (24433952).

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

23972728 is a wasteful number, since it uses less digits than its factorization.

23972728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230526 (or 230522 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 23972728 is about 4896.1952575444. The cubic root of 23972728 is about 288.3406142332.

The spelling of 23972728 in words is "twenty-three million, nine hundred seventy-two thousand, seven hundred twenty-eight".