199780328 has 32 divisors (see below), whose sum is σ = 432682560. Its totient is φ = 85466880.

The previous prime is 199780319. The next prime is 199780351. The reversal of 199780328 is 823087991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65276 + ... + 68267.

It is an arithmetic number, because the mean of its divisors is an integer number (13521330).

Almost surely, 2^199780328 is an apocalyptic number.

It is an amenable number.

199780328 is an abundant number, since it is smaller than the sum of its proper divisors (232902232).

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

199780328 is a wasteful number, since it uses less digits than its factorization.

199780328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133577 (or 133573 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 199780328 is about 14134.3669118924. The cubic root of 199780328 is about 584.5893609305.

The spelling of 199780328 in words is "one hundred ninety-nine million, seven hundred eighty thousand, three hundred twenty-eight".