2857812 has 12 divisors (see below), whose sum is σ = 6668256. Its totient is φ = 952600.

The previous prime is 2857801. The next prime is 2857831. The reversal of 2857812 is 2187582.

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

It is a congruent number.

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, 119064 + ... + 119087.

It is an arithmetic number, because the mean of its divisors is an integer number (555688).

2^2857812 is an apocalyptic number.

It is an amenable number.

2857812 is an abundant number, since it is smaller than the sum of its proper divisors (3810444).

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

2857812 is a wasteful number, since it uses less digits than its factorization.

2857812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238158 (or 238156 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 2857812 is about 1690.5064329957. The cubic root of 2857812 is about 141.9094178629.

The spelling of 2857812 in words is "two million, eight hundred fifty-seven thousand, eight hundred twelve".