857153136 has 80 divisors (see below), whose sum is σ = 2534266368. Its totient is φ = 244550400.

The previous prime is 857153117. The next prime is 857153149. The reversal of 857153136 is 631351758.

It is a happy number.

857153136 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 2×857153136² = 1469422997109268992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 857153094 and 857153103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314821 + ... + 317531.

Almost surely, 2^857153136 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 857153136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267133184).

857153136 is an abundant number, since it is smaller than the sum of its proper divisors (1677113232).

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

857153136 is a wasteful number, since it uses less digits than its factorization.

857153136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670 (or 3664 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 857153136 is about 29277.1777328348. The cubic root of 857153136 is about 949.9180487017.

The spelling of 857153136 in words is "eight hundred fifty-seven million, one hundred fifty-three thousand, one hundred thirty-six".