228648078 has 24 divisors (see below), whose sum is σ = 496103400. Its totient is φ = 76108464.

The previous prime is 228648073. The next prime is 228648089. The reversal of 228648078 is 870846822.

It is a happy number.

228648078 is a `hidden beast` number, since 22 + 86 + 480 + 78 = 666.

228648078 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228648073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4708 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (20670975).

Almost surely, 2^228648078 is an apocalyptic number.

228648078 is an abundant number, since it is smaller than the sum of its proper divisors (267455322).

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

228648078 is a wasteful number, since it uses less digits than its factorization.

228648078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17936 (or 17933 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 228648078 is about 15121.1136494638. The cubic root of 228648078 is about 611.4897547684.

The spelling of 228648078 in words is "two hundred twenty-eight million, six hundred forty-eight thousand, seventy-eight".