199728528 has 20 divisors (see below), whose sum is σ = 515965488. Its totient is φ = 66576160.

The previous prime is 199728499. The next prime is 199728547. The reversal of 199728528 is 825827991.

199728528 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 2080458 + ... + 2080553.

Almost surely, 2^199728528 is an apocalyptic number.

It is an amenable number.

199728528 is an abundant number, since it is smaller than the sum of its proper divisors (316236960).

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

199728528 is a wasteful number, since it uses less digits than its factorization.

199728528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161022 (or 4161016 counting only the distinct ones).

The product of its digits is 725760, while the sum is 51.

The square root of 199728528 is about 14132.5343799334. The cubic root of 199728528 is about 584.5388315203.

The spelling of 199728528 in words is "one hundred ninety-nine million, seven hundred twenty-eight thousand, five hundred twenty-eight".