2857128 has 16 divisors (see below), whose sum is σ = 7142880. Its totient is φ = 952368.

The previous prime is 2857123. The next prime is 2857159. The reversal of 2857128 is 8217582.

It is not an unprimeable number, because it can be changed into a prime (2857123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59500 + ... + 59547.

It is an arithmetic number, because the mean of its divisors is an integer number (446430).

2^2857128 is an apocalyptic number.

It is an amenable number.

2857128 is an abundant number, since it is smaller than the sum of its proper divisors (4285752).

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

2857128 is a wasteful number, since it uses less digits than its factorization.

2857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119056 (or 119052 counting only the distinct ones).

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

The square root of 2857128 is about 1690.3041146492. The cubic root of 2857128 is about 141.8980952395.

The spelling of 2857128 in words is "two million, eight hundred fifty-seven thousand, one hundred twenty-eight".