2057890 has 16 divisors (see below), whose sum is σ = 3899520. Its totient is φ = 779760.

The previous prime is 2057863. The next prime is 2057893. The reversal of 2057890 is 987502.

It is a super-2 number, since 2×2057890² = 8469822504200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2057893) 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, 5226 + ... + 5605.

It is an arithmetic number, because the mean of its divisors is an integer number (243720).

2^2057890 is an apocalyptic number.

2057890 is a deficient number, since it is larger than the sum of its proper divisors (1841630).

2057890 is a wasteful number, since it uses less digits than its factorization.

2057890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10857.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2057890 is about 1434.5347677906. The cubic root of 2057890 is about 127.1961752077.

The spelling of 2057890 in words is "two million, fifty-seven thousand, eight hundred ninety".