228307528 has 16 divisors (see below), whose sum is σ = 428459760. Its totient is φ = 114051600.

The previous prime is 228307523. The next prime is 228307531. The reversal of 228307528 is 825703822.

228307528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (228307523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818 + ... + 21553.

It is an arithmetic number, because the mean of its divisors is an integer number (26778735).

Almost surely, 2^228307528 is an apocalyptic number.

It is an amenable number.

228307528 is a deficient number, since it is larger than the sum of its proper divisors (200152232).

228307528 is a wasteful number, since it uses less digits than its factorization.

228307528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25548 (or 25544 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 228307528 is about 15109.8487087065. The cubic root of 228307528 is about 611.1860182583.

The spelling of 228307528 in words is "two hundred twenty-eight million, three hundred seven thousand, five hundred twenty-eight".