23161328 has 10 divisors (see below), whose sum is σ = 44875104. Its totient is φ = 11580656.

The previous prime is 23161319. The next prime is 23161331. The reversal of 23161328 is 82316132.

It is a super-2 number, since 2×23161328² = 1072894229447168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23161297 and 23161306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723776 + ... + 723807.

Almost surely, 2^23161328 is an apocalyptic number.

It is an amenable number.

23161328 is a deficient number, since it is larger than the sum of its proper divisors (21713776).

23161328 is a wasteful number, since it uses less digits than its factorization.

23161328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447591 (or 1447585 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 23161328 is about 4812.6217387200. The cubic root of 23161328 is about 285.0500702016.

The spelling of 23161328 in words is "twenty-three million, one hundred sixty-one thousand, three hundred twenty-eight".