857852780 has 12 divisors (see below), whose sum is σ = 1801490880. Its totient is φ = 343141104.

The previous prime is 857852777. The next prime is 857852797. The reversal of 857852780 is 87258758.

857852780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857852780² = 1471822784307456800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21446300 + ... + 21446339.

It is an arithmetic number, because the mean of its divisors is an integer number (150124240).

Almost surely, 2^857852780 is an apocalyptic number.

It is an amenable number.

857852780 is an abundant number, since it is smaller than the sum of its proper divisors (943638100).

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

857852780 is a wasteful number, since it uses less digits than its factorization.

857852780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42892648 (or 42892646 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 50.

The square root of 857852780 is about 29289.1239199809. The cubic root of 857852780 is about 950.1764326051.

The spelling of 857852780 in words is "eight hundred fifty-seven million, eight hundred fifty-two thousand, seven hundred eighty".