199120836 has 96 divisors (see below), whose sum is σ = 505523200. Its totient is φ = 60808320.

The previous prime is 199120829. The next prime is 199120837. The reversal of 199120836 is 638021991.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 199120794 and 199120803.

It is not an unprimeable number, because it can be changed into a prime (199120837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1432455 + ... + 1432593.

Almost surely, 2^199120836 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 199120836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252761600).

199120836 is an abundant number, since it is smaller than the sum of its proper divisors (306402364).

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

199120836 is a wasteful number, since it uses less digits than its factorization.

199120836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 199120836 is about 14111.0182481634. The cubic root of 199120836 is about 583.9453919353.

The spelling of 199120836 in words is "one hundred ninety-nine million, one hundred twenty thousand, eight hundred thirty-six".