228840688 has 20 divisors (see below), whose sum is σ = 446207800. Its totient is φ = 113690304.

The previous prime is 228840673. The next prime is 228840701. The reversal of 228840688 is 886048822.

It is a congruent number.

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, 43038 + ... + 48061.

It is an arithmetic number, because the mean of its divisors is an integer number (22310390).

Almost surely, 2^228840688 is an apocalyptic number.

It is an amenable number.

228840688 is a deficient number, since it is larger than the sum of its proper divisors (217367112).

228840688 is a wasteful number, since it uses less digits than its factorization.

228840688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91264 (or 91258 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 46.

The square root of 228840688 is about 15127.4812179688. The cubic root of 228840688 is about 611.6614101005.

The spelling of 228840688 in words is "two hundred twenty-eight million, eight hundred forty thousand, six hundred eighty-eight".