28225232 has 40 divisors (see below), whose sum is σ = 65222016. Its totient is φ = 11569536.

The previous prime is 28225217. The next prime is 28225237. The reversal of 28225232 is 23252282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28225237) 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, 2903 + ... + 8054.

Almost surely, 2^28225232 is an apocalyptic number.

It is an amenable number.

28225232 is an abundant number, since it is smaller than the sum of its proper divisors (36996784).

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

28225232 is a wasteful number, since it uses less digits than its factorization.

28225232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10995 (or 10989 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 28225232 is about 5312.7424179984. The cubic root of 28225232 is about 304.4709344445.

The spelling of 28225232 in words is "twenty-eight million, two hundred twenty-five thousand, two hundred thirty-two".