857204052 has 12 divisors (see below), whose sum is σ = 2000142816. Its totient is φ = 285734680.

The previous prime is 857204041. The next prime is 857204059. The reversal of 857204052 is 250402758.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857204059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35716824 + ... + 35716847.

It is an arithmetic number, because the mean of its divisors is an integer number (166678568).

Almost surely, 2^857204052 is an apocalyptic number.

It is an amenable number.

857204052 is an abundant number, since it is smaller than the sum of its proper divisors (1142938764).

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

857204052 is a wasteful number, since it uses less digits than its factorization.

857204052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71433678 (or 71433676 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 857204052 is about 29278.0472709503. The cubic root of 857204052 is about 949.9368571144.

The spelling of 857204052 in words is "eight hundred fifty-seven million, two hundred four thousand, fifty-two".