23331228 has 24 divisors (see below), whose sum is σ = 55130880. Its totient is φ = 7678320.

The previous prime is 23331199. The next prime is 23331229. The reversal of 23331228 is 82213332.

It is a junction number, because it is equal to n+sod(n) for n = 23331198 and 23331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11358 + ... + 13253.

It is an arithmetic number, because the mean of its divisors is an integer number (2297120).

Almost surely, 2^23331228 is an apocalyptic number.

It is an amenable number.

23331228 is an abundant number, since it is smaller than the sum of its proper divisors (31799652).

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

23331228 is a wasteful number, since it uses less digits than its factorization.

23331228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24697 (or 24695 counting only the distinct ones).

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

The square root of 23331228 is about 4830.2409877769. The cubic root of 23331228 is about 285.7453680947.

The spelling of 23331228 in words is "twenty-three million, three hundred thirty-one thousand, two hundred twenty-eight".