228688842 has 8 divisors (see below), whose sum is σ = 457377696. Its totient is φ = 76229612.

The previous prime is 228688819. The next prime is 228688847. The reversal of 228688842 is 248886822.

It is a happy number.

228688842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

228688842 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 228688791 and 228688800.

It is not an unprimeable number, because it can be changed into a prime (228688847) 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, 19057398 + ... + 19057409.

It is an arithmetic number, because the mean of its divisors is an integer number (57172212).

Almost surely, 2^228688842 is an apocalyptic number.

228688842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

228688842 is a wasteful number, since it uses less digits than its factorization.

228688842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38114812.

The product of its digits is 786432, while the sum is 48.

The square root of 228688842 is about 15122.4615059851. The cubic root of 228688842 is about 611.5260919601.

The spelling of 228688842 in words is "two hundred twenty-eight million, six hundred eighty-eight thousand, eight hundred forty-two".