857513328 has 120 divisors (see below), whose sum is σ = 2585870208. Its totient is φ = 244153728.

The previous prime is 857513323. The next prime is 857513329. The reversal of 857513328 is 823315758.

857513328 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 (42).

It is a self number, because there is not a number n which added to its sum of digits gives 857513328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857513323) 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, 1041525 + ... + 1042347.

Almost surely, 2^857513328 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 857513328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292935104).

857513328 is an abundant number, since it is smaller than the sum of its proper divisors (1728356880).

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

857513328 is a wasteful number, since it uses less digits than its factorization.

857513328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1278 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 857513328 is about 29283.3284993356. The cubic root of 857513328 is about 950.0510879267.

The spelling of 857513328 in words is "eight hundred fifty-seven million, five hundred thirteen thousand, three hundred twenty-eight".