857934828 has 72 divisors (see below), whose sum is σ = 2262012480. Its totient is φ = 284322960.

The previous prime is 857934793. The next prime is 857934829. The reversal of 857934828 is 828439758.

It is a happy number.

857934828 is a `hidden beast` number, since 8 + 579 + 3 + 48 + 28 = 666.

857934828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (857934829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171523 + ... + 176453.

It is an arithmetic number, because the mean of its divisors is an integer number (31416840).

Almost surely, 2^857934828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857934828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131006240).

857934828 is an abundant number, since it is smaller than the sum of its proper divisors (1404077652).

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

857934828 is a wasteful number, since it uses less digits than its factorization.

857934828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129 (or 5115 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 857934828 is about 29290.5245429303. The cubic root of 857934828 is about 950.2067243570.

The spelling of 857934828 in words is "eight hundred fifty-seven million, nine hundred thirty-four thousand, eight hundred twenty-eight".