23187228 has 24 divisors (see below), whose sum is σ = 54342288. Its totient is φ = 7694976.

The previous prime is 23187217. The next prime is 23187313. The reversal of 23187228 is 82278132.

It is a congruent number.

It is an unprimeable number.

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, 1351 + ... + 6942.

It is an arithmetic number, because the mean of its divisors is an integer number (2264262).

Almost surely, 2^23187228 is an apocalyptic number.

It is an amenable number.

23187228 is an abundant number, since it is smaller than the sum of its proper divisors (31155060).

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

23187228 is a wasteful number, since it uses less digits than its factorization.

23187228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533 (or 8531 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 23187228 is about 4815.3118279090. The cubic root of 23187228 is about 285.1562823987.

The spelling of 23187228 in words is "twenty-three million, one hundred eighty-seven thousand, two hundred twenty-eight".