228784328 has 16 divisors (see below), whose sum is σ = 431813760. Its totient is φ = 113634000.

The previous prime is 228784319. The next prime is 228784333. The reversal of 228784328 is 823487822.

228784328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93488 + ... + 95903.

It is an arithmetic number, because the mean of its divisors is an integer number (26988360).

Almost surely, 2^228784328 is an apocalyptic number.

It is an amenable number.

228784328 is a deficient number, since it is larger than the sum of its proper divisors (203029432).

228784328 is a wasteful number, since it uses less digits than its factorization.

228784328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189548 (or 189544 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 228784328 is about 15125.6182683552. The cubic root of 228784328 is about 611.6111916598.

The spelling of 228784328 in words is "two hundred twenty-eight million, seven hundred eighty-four thousand, three hundred twenty-eight".