23381328 has 20 divisors (see below), whose sum is σ = 60401888. Its totient is φ = 7793760.

The previous prime is 23381297. The next prime is 23381333. The reversal of 23381328 is 82318332.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23381295 and 23381304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243508 + ... + 243603.

Almost surely, 2^23381328 is an apocalyptic number.

It is an amenable number.

23381328 is an abundant number, since it is smaller than the sum of its proper divisors (37020560).

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

23381328 is a wasteful number, since it uses less digits than its factorization.

23381328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487122 (or 487116 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 23381328 is about 4835.4242833489. The cubic root of 23381328 is about 285.9497523670.

The spelling of 23381328 in words is "twenty-three million, three hundred eighty-one thousand, three hundred twenty-eight".