857835356 has 36 divisors (see below), whose sum is σ = 1751479128. Its totient is φ = 366555168.

The previous prime is 857835353. The next prime is 857835359. The reversal of 857835356 is 653538758.

It is an interprime number because it is at equal distance from previous prime (857835353) and next prime (857835359).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857835353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61706 + ... + 74318.

It is an arithmetic number, because the mean of its divisors is an integer number (48652198).

Almost surely, 2^857835356 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 857835356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875739564).

857835356 is an abundant number, since it is smaller than the sum of its proper divisors (893643772).

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

857835356 is a wasteful number, since it uses less digits than its factorization.

857835356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978 (or 12969 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 50.

The square root of 857835356 is about 29288.8264701746. The cubic root of 857835356 is about 950.1699994942.

It can be divided in two parts, 8578 and 35356, that added together give a palindrome (43934).

The spelling of 857835356 in words is "eight hundred fifty-seven million, eight hundred thirty-five thousand, three hundred fifty-six".