199838028 has 96 divisors (see below), whose sum is σ = 530962432. Its totient is φ = 58121280.

The previous prime is 199838017. The next prime is 199838033. The reversal of 199838028 is 820838991.

It is a happy number.

199838028 is digitally balanced in base 2, 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 31 ways as a sum of consecutive naturals, for example, 4647375 + ... + 4647417.

Almost surely, 2^199838028 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 199838028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265481216).

199838028 is an abundant number, since it is smaller than the sum of its proper divisors (331124404).

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

199838028 is a wasteful number, since it uses less digits than its factorization.

199838028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 199838028 is about 14136.4078888521. The cubic root of 199838028 is about 584.6456353389.

The spelling of 199838028 in words is "one hundred ninety-nine million, eight hundred thirty-eight thousand, twenty-eight".