199790328 has 64 divisors (see below), whose sum is σ = 525968640. Its totient is φ = 63117824.

The previous prime is 199790323. The next prime is 199790329. The reversal of 199790328 is 823097991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199790323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60775 + ... + 63977.

It is an arithmetic number, because the mean of its divisors is an integer number (8218260).

Almost surely, 2^199790328 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 199790328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262984320).

199790328 is an abundant number, since it is smaller than the sum of its proper divisors (326178312).

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

199790328 is a wasteful number, since it uses less digits than its factorization.

199790328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 199790328 is about 14134.7206551810. The cubic root of 199790328 is about 584.5991146371.

The spelling of 199790328 in words is "one hundred ninety-nine million, seven hundred ninety thousand, three hundred twenty-eight".