228991596 has 12 divisors (see below), whose sum is σ = 534313752. Its totient is φ = 76330528.

The previous prime is 228991577. The next prime is 228991597. The reversal of 228991596 is 695199822.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (228991597) 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 3 ways as a sum of consecutive naturals, for example, 9541305 + ... + 9541328.

It is an arithmetic number, because the mean of its divisors is an integer number (44526146).

Almost surely, 2^228991596 is an apocalyptic number.

It is an amenable number.

228991596 is an abundant number, since it is smaller than the sum of its proper divisors (305322156).

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

228991596 is a wasteful number, since it uses less digits than its factorization.

228991596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19082640 (or 19082638 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 228991596 is about 15132.4682718980. The cubic root of 228991596 is about 611.7958330454.

The spelling of 228991596 in words is "two hundred twenty-eight million, nine hundred ninety-one thousand, five hundred ninety-six".