671199228 has 144 divisors (see below), whose sum is σ = 2018365440. Its totient is φ = 184032000.

The previous prime is 671199211. The next prime is 671199239. The reversal of 671199228 is 822991176.

671199228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1179328 + ... + 1179896.

Almost surely, 2^671199228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671199228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009182720).

671199228 is an abundant number, since it is smaller than the sum of its proper divisors (1347166212).

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

671199228 is a wasteful number, since it uses less digits than its factorization.

671199228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 763 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 671199228 is about 25907.5129643893. The cubic root of 671199228 is about 875.5557733911. Note that the first 3 decimals are identical.

The spelling of 671199228 in words is "six hundred seventy-one million, one hundred ninety-nine thousand, two hundred twenty-eight".