23723928 has 80 divisors (see below), whose sum is σ = 68650560. Its totient is φ = 7646400.

The previous prime is 23723899. The next prime is 23723939. The reversal of 23723928 is 82932732.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23723892 and 23723901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19498 + ... + 20678.

It is an arithmetic number, because the mean of its divisors is an integer number (858132).

Almost surely, 2^23723928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23723928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34325280).

23723928 is an abundant number, since it is smaller than the sum of its proper divisors (44926632).

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

23723928 is a wasteful number, since it uses less digits than its factorization.

23723928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1217 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 23723928 is about 4870.7215071281. The cubic root of 23723928 is about 287.3396328072.

The spelling of 23723928 in words is "twenty-three million, seven hundred twenty-three thousand, nine hundred twenty-eight".