23928321 has 8 divisors (see below), whose sum is σ = 32002144. Its totient is φ = 15903360.

The previous prime is 23928301. The next prime is 23928337. The reversal of 23928321 is 12382932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23928321 - 2¹⁰ = 23927297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23928301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11056 + ... + 13041.

It is an arithmetic number, because the mean of its divisors is an integer number (4000268).

Almost surely, 2^23928321 is an apocalyptic number.

It is an amenable number.

23928321 is a deficient number, since it is larger than the sum of its proper divisors (8073823).

23928321 is a wasteful number, since it uses less digits than its factorization.

23928321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24431.

The product of its digits is 5184, while the sum is 30.

The square root of 23928321 is about 4891.6583077725. The cubic root of 23928321 is about 288.1624637944.

The spelling of 23928321 in words is "twenty-three million, nine hundred twenty-eight thousand, three hundred twenty-one".