2189435228 has 24 divisors (see below), whose sum is σ = 4001241888. Its totient is φ = 1046298176.

The previous prime is 2189435207. The next prime is 2189435239. The reversal of 2189435228 is 8225349812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117650 + ... + 134982.

It is an arithmetic number, because the mean of its divisors is an integer number (166718412).

Almost surely, 2^2189435228 is an apocalyptic number.

It is an amenable number.

2189435228 is a deficient number, since it is larger than the sum of its proper divisors (1811806660).

2189435228 is a wasteful number, since it uses less digits than its factorization.

2189435228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18733 (or 18731 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 2189435228 is about 46791.4012186000. The cubic root of 2189435228 is about 1298.5062187261.

The spelling of 2189435228 in words is "two billion, one hundred eighty-nine million, four hundred thirty-five thousand, two hundred twenty-eight".