857212 has 18 divisors (see below), whose sum is σ = 1557024. Its totient is φ = 412920.

The previous prime is 857203. The next prime is 857221. The reversal of 857212 is 212758.

857212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (857203) and next prime (857221).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3733 + ... + 3955.

2⁸⁵⁷²¹² is an apocalyptic number.

It is an amenable number.

857212 is a deficient number, since it is larger than the sum of its proper divisors (699812).

857212 is a wasteful number, since it uses less digits than its factorization.

857212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 256 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 857212 is about 925.8574404302. The cubic root of 857212 is about 94.9939793045.

The spelling of 857212 in words is "eight hundred fifty-seven thousand, two hundred twelve".