199812712 has 16 divisors (see below), whose sum is σ = 408708000. Its totient is φ = 90823920.

The previous prime is 199812677. The next prime is 199812731. The reversal of 199812712 is 217218991.

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, 1135212 + ... + 1135387.

It is an arithmetic number, because the mean of its divisors is an integer number (25544250).

Almost surely, 2^199812712 is an apocalyptic number.

It is an amenable number.

199812712 is an abundant number, since it is smaller than the sum of its proper divisors (208895288).

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

199812712 is a wasteful number, since it uses less digits than its factorization.

199812712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270616 (or 2270612 counting only the distinct ones).

The product of its digits is 18144, while the sum is 40.

The square root of 199812712 is about 14135.5124420730. The cubic root of 199812712 is about 584.6209461542.

The spelling of 199812712 in words is "one hundred ninety-nine million, eight hundred twelve thousand, seven hundred twelve".