857730830 has 16 divisors (see below), whose sum is σ = 1684271664. Its totient is φ = 311902080.

The previous prime is 857730827. The next prime is 857730859. The reversal of 857730830 is 38037758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3898667 + ... + 3898886.

It is an arithmetic number, because the mean of its divisors is an integer number (105266979).

Almost surely, 2^857730830 is an apocalyptic number.

857730830 is a deficient number, since it is larger than the sum of its proper divisors (826540834).

857730830 is a wasteful number, since it uses less digits than its factorization.

857730830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7797571.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 857730830 is about 29287.0420151985. The cubic root of 857730830 is about 950.1314056456.

The spelling of 857730830 in words is "eight hundred fifty-seven million, seven hundred thirty thousand, eight hundred thirty".