228712128 has 28 divisors (see below), whose sum is σ = 605134680. Its totient is φ = 76237312.

The previous prime is 228712123. The next prime is 228712153. The reversal of 228712128 is 821217822.

228712128 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 (228712123) 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, 595413 + ... + 595796.

Almost surely, 2^228712128 is an apocalyptic number.

It is an amenable number.

228712128 is an abundant number, since it is smaller than the sum of its proper divisors (376422552).

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

228712128 is a wasteful number, since it uses less digits than its factorization.

228712128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191224 (or 1191214 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 228712128 is about 15123.2314007291. The cubic root of 228712128 is about 611.5468472553.

The spelling of 228712128 in words is "two hundred twenty-eight million, seven hundred twelve thousand, one hundred twenty-eight".