857857432 has 32 divisors (see below), whose sum is σ = 1692270720. Its totient is φ = 407151360.

The previous prime is 857857411. The next prime is 857857447. The reversal of 857857432 is 234758758.

857857432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 23208 + ... + 47479.

It is an arithmetic number, because the mean of its divisors is an integer number (52883460).

Almost surely, 2^857857432 is an apocalyptic number.

857857432 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

857857432 is a deficient number, since it is larger than the sum of its proper divisors (834413288).

857857432 is a wasteful number, since it uses less digits than its factorization.

857857432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70771 (or 70767 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The square root of 857857432 is about 29289.2033350175. The cubic root of 857857432 is about 950.1781501542.

The spelling of 857857432 in words is "eight hundred fifty-seven million, eight hundred fifty-seven thousand, four hundred thirty-two".