857541072 has 20 divisors (see below), whose sum is σ = 2215314560. Its totient is φ = 285847008.

The previous prime is 857541029. The next prime is 857541073. The reversal of 857541072 is 270145758.

It is a self number, because there is not a number n which added to its sum of digits gives 857541072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857541073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8932672 + ... + 8932767.

It is an arithmetic number, because the mean of its divisors is an integer number (110765728).

Almost surely, 2^857541072 is an apocalyptic number.

It is an amenable number.

857541072 is an abundant number, since it is smaller than the sum of its proper divisors (1357773488).

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

857541072 is a wasteful number, since it uses less digits than its factorization.

857541072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17865450 (or 17865444 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 857541072 is about 29283.8022121445. The cubic root of 857541072 is about 950.0613338056.

The spelling of 857541072 in words is "eight hundred fifty-seven million, five hundred forty-one thousand, seventy-two".