199087320 has 128 divisors (see below), whose sum is σ = 650592000. Its totient is φ = 48545280.

The previous prime is 199087283. The next prime is 199087321. The reversal of 199087320 is 23780991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199087321) 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, 64615 + ... + 67625.

It is an arithmetic number, because the mean of its divisors is an integer number (5082750).

Almost surely, 2^199087320 is an apocalyptic number.

199087320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199087320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325296000).

199087320 is an abundant number, since it is smaller than the sum of its proper divisors (451504680).

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

199087320 is a wasteful number, since it uses less digits than its factorization.

199087320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3069 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 199087320 is about 14109.8306155673. The cubic root of 199087320 is about 583.9126268861.

The spelling of 199087320 in words is "one hundred ninety-nine million, eighty-seven thousand, three hundred twenty".