857130216 has 16 divisors (see below), whose sum is σ = 2142825600. Its totient is φ = 285710064.

The previous prime is 857130179. The next prime is 857130221. The reversal of 857130216 is 612031758.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17856856 + ... + 17856903.

It is an arithmetic number, because the mean of its divisors is an integer number (133926600).

Almost surely, 2^857130216 is an apocalyptic number.

It is an amenable number.

857130216 is an abundant number, since it is smaller than the sum of its proper divisors (1285695384).

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

857130216 is a wasteful number, since it uses less digits than its factorization.

857130216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35713768 (or 35713764 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 857130216 is about 29276.7862990459. The cubic root of 857130216 is about 949.9095817916.

The spelling of 857130216 in words is "eight hundred fifty-seven million, one hundred thirty thousand, two hundred sixteen".