2857000 has 32 divisors (see below), whose sum is σ = 6687720. Its totient is φ = 1142400.

The previous prime is 2856977. The next prime is 2857009. The reversal of 2857000 is 7582.

It can be written as a sum of positive squares in 4 ways, for example, as 1077444 + 1779556 = 1038^2 + 1334^2 .

It is not an unprimeable number, because it can be changed into a prime (2857009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429 + ... + 2428.

2^2857000 is an apocalyptic number.

2857000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857000 is an abundant number, since it is smaller than the sum of its proper divisors (3830720).

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

2857000 is a wasteful number, since it uses less digits than its factorization.

2857000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 2857000 is about 1690.2662512161. The cubic root of 2857000 is about 141.8959761853.

The spelling of 2857000 in words is "two million, eight hundred fifty-seven thousand".