23691928 has 32 divisors (see below), whose sum is σ = 48177360. Its totient is φ = 10857600.

The previous prime is 23691923. The next prime is 23691929. The reversal of 23691928 is 82919632.

It is a happy number.

It is a super-2 number, since 2×23691928² = 1122614904714368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23691923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15603 + ... + 17053.

Almost surely, 2^23691928 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 23691928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24088680).

23691928 is an abundant number, since it is smaller than the sum of its proper divisors (24485432).

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

23691928 is a wasteful number, since it uses less digits than its factorization.

23691928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1623 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 23691928 is about 4867.4354643898. The cubic root of 23691928 is about 287.2103820705.

The spelling of 23691928 in words is "twenty-three million, six hundred ninety-one thousand, nine hundred twenty-eight".