228128304 has 80 divisors (see below), whose sum is σ = 626959872. Its totient is φ = 71230464.

The previous prime is 228128293. The next prime is 228128309. The reversal of 228128304 is 403821822.

228128304 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 (228128309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214077 + ... + 215139.

Almost surely, 2^228128304 is an apocalyptic number.

228128304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228128304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313479936).

228128304 is an abundant number, since it is smaller than the sum of its proper divisors (398831568).

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

228128304 is a wasteful number, since it uses less digits than its factorization.

228128304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 228128304 is about 15103.9168429914. The cubic root of 228128304 is about 611.0260470715.

The spelling of 228128304 in words is "two hundred twenty-eight million, one hundred twenty-eight thousand, three hundred four".