228028605 has 24 divisors (see below), whose sum is σ = 424413792. Its totient is φ = 104241312.

The previous prime is 228028571. The next prime is 228028607. The reversal of 228028605 is 506820822.

It is a de Polignac number, because none of the positive numbers 2^k-228028605 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228028607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154387 + ... + 155856.

It is an arithmetic number, because the mean of its divisors is an integer number (17683908).

Almost surely, 2^228028605 is an apocalyptic number.

It is an amenable number.

228028605 is a deficient number, since it is larger than the sum of its proper divisors (196385187).

228028605 is a wasteful number, since it uses less digits than its factorization.

228028605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310265 (or 310258 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 228028605 is about 15100.6160470360. The cubic root of 228028605 is about 610.9370217856.

The spelling of 228028605 in words is "two hundred twenty-eight million, twenty-eight thousand, six hundred five".