23904228 has 24 divisors (see below), whose sum is σ = 56300832. Its totient is φ = 7893184.

The previous prime is 23904203. The next prime is 23904239. The reversal of 23904228 is 82240932.

It is a junction number, because it is equal to n+sod(n) for n = 23904195 and 23904204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8025 + ... + 10592.

It is an arithmetic number, because the mean of its divisors is an integer number (2345868).

Almost surely, 2^23904228 is an apocalyptic number.

It is an amenable number.

23904228 is an abundant number, since it is smaller than the sum of its proper divisors (32396604).

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

23904228 is a wasteful number, since it uses less digits than its factorization.

23904228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18731 (or 18729 counting only the distinct ones).

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

The square root of 23904228 is about 4889.1950257686. The cubic root of 23904228 is about 288.0657160994.

The spelling of 23904228 in words is "twenty-three million, nine hundred four thousand, two hundred twenty-eight".