191730056 has 16 divisors (see below), whose sum is σ = 410850240. Its totient is φ = 82170000.

The previous prime is 191730043. The next prime is 191730059. The reversal of 191730056 is 650037191.

191730056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191730059) 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 3 ways as a sum of consecutive naturals, for example, 1711820 + ... + 1711931.

It is an arithmetic number, because the mean of its divisors is an integer number (25678140).

Almost surely, 2^191730056 is an apocalyptic number.

It is an amenable number.

191730056 is an abundant number, since it is smaller than the sum of its proper divisors (219120184).

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

191730056 is a wasteful number, since it uses less digits than its factorization.

191730056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423764 (or 3423760 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 191730056 is about 13846.6622692980. The cubic root of 191730056 is about 576.6293356093.

The spelling of 191730056 in words is "one hundred ninety-one million, seven hundred thirty thousand, fifty-six".