23328321 has 8 divisors (see below), whose sum is σ = 31691520. Its totient is φ = 15258672.

The previous prime is 23328311. The next prime is 23328323. The reversal of 23328321 is 12382332.

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

It is not a de Polignac number, because 23328321 - 2¹⁵ = 23295553 is a prime.

It is a super-3 number, since 3×23328321³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23328291 and 23328300.

It is not an unprimeable number, because it can be changed into a prime (23328323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73201 + ... + 73518.

It is an arithmetic number, because the mean of its divisors is an integer number (3961440).

Almost surely, 2^23328321 is an apocalyptic number.

It is an amenable number.

23328321 is a deficient number, since it is larger than the sum of its proper divisors (8363199).

23328321 is a wasteful number, since it uses less digits than its factorization.

23328321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146775.

The product of its digits is 1728, while the sum is 24.

The square root of 23328321 is about 4829.9400617399. The cubic root of 23328321 is about 285.7334999340.

The spelling of 23328321 in words is "twenty-three million, three hundred twenty-eight thousand, three hundred twenty-one".