199465728 has 144 divisors (see below), whose sum is σ = 662059776. Its totient is φ = 51793920.

The previous prime is 199465727. The next prime is 199465751. The reversal of 199465728 is 827564991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199465723) 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 in 15 ways as a sum of consecutive naturals, for example, 57450 + ... + 60822.

Almost surely, 2^199465728 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 199465728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331029888).

199465728 is an abundant number, since it is smaller than the sum of its proper divisors (462594048).

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

199465728 is a wasteful number, since it uses less digits than its factorization.

199465728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410 (or 3396 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 199465728 is about 14123.2336240678. The cubic root of 199465728 is about 584.2823429899.

The spelling of 199465728 in words is "one hundred ninety-nine million, four hundred sixty-five thousand, seven hundred twenty-eight".