228033128928 has 48 divisors (see below), whose sum is σ = 653003963136. Its totient is φ = 69100947840.

The previous prime is 228033128923. The next prime is 228033128959. The reversal of 228033128928 is 829821330822.

228033128928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228033128923) 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, 107969176 + ... + 107971287.

It is an arithmetic number, because the mean of its divisors is an integer number (13604249232).

Almost surely, 2^228033128928 is an apocalyptic number.

It is an amenable number.

228033128928 is an abundant number, since it is smaller than the sum of its proper divisors (424970834208).

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

228033128928 is a wasteful number, since it uses less digits than its factorization.

228033128928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215940487 (or 215940479 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 228033128928 in words is "two hundred twenty-eight billion, thirty-three million, one hundred twenty-eight thousand, nine hundred twenty-eight".