23973728 has 24 divisors (see below), whose sum is σ = 49251888. Its totient is φ = 11465344.

The previous prime is 23973727. The next prime is 23973737. The reversal of 23973728 is 82737932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23973721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15551 + ... + 17022.

It is an arithmetic number, because the mean of its divisors is an integer number (2052162).

Almost surely, 2^23973728 is an apocalyptic number.

It is an amenable number.

23973728 is an abundant number, since it is smaller than the sum of its proper divisors (25278160).

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

23973728 is a wasteful number, since it uses less digits than its factorization.

23973728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32606 (or 32598 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 23973728 is about 4896.2973765898. The cubic root of 23973728 is about 288.3446234641.

The spelling of 23973728 in words is "twenty-three million, nine hundred seventy-three thousand, seven hundred twenty-eight".