857657900 has 54 divisors (see below), whose sum is σ = 2032612092. Its totient is φ = 311522400.

The previous prime is 857657893. The next prime is 857657903. The reversal of 857657900 is 9756758.

It is a happy number.

857657900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (857657903) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 970859 + ... + 971741.

Almost surely, 2^857657900 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 857657900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016306046).

857657900 is an abundant number, since it is smaller than the sum of its proper divisors (1174954192).

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

857657900 is a wasteful number, since it uses less digits than its factorization.

857657900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 857657900 is about 29285.7968988382. The cubic root of 857657900 is about 950.1044760445.

The spelling of 857657900 in words is "eight hundred fifty-seven million, six hundred fifty-seven thousand, nine hundred".