199607428 has 6 divisors (see below), whose sum is σ = 349313006. Its totient is φ = 99803712.

The previous prime is 199607423. The next prime is 199607431. The reversal of 199607428 is 824706991.

It can be written as a sum of positive squares in only one way, i.e., 151831684 + 47775744 = 12322^2 + 6912^2 .

It is not an unprimeable number, because it can be changed into a prime (199607423) 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 as a sum of consecutive naturals, namely, 24950925 + ... + 24950932.

Almost surely, 2^199607428 is an apocalyptic number.

It is an amenable number.

199607428 is a deficient number, since it is larger than the sum of its proper divisors (149705578).

199607428 is a wasteful number, since it uses less digits than its factorization.

199607428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49901861 (or 49901859 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 199607428 is about 14128.2492899864. The cubic root of 199607428 is about 584.4206678562.

The spelling of 199607428 in words is "one hundred ninety-nine million, six hundred seven thousand, four hundred twenty-eight".