3857457 has 16 divisors (see below), whose sum is σ = 5303232. Its totient is φ = 2493120.

The previous prime is 3857449. The next prime is 3857459. The reversal of 3857457 is 7547583.

It is not a de Polignac number, because 3857457 - 2³ = 3857449 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3857459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19483 + ... + 19679.

It is an arithmetic number, because the mean of its divisors is an integer number (331452).

Almost surely, 2^3857457 is an apocalyptic number.

It is an amenable number.

3857457 is a deficient number, since it is larger than the sum of its proper divisors (1445775).

3857457 is a wasteful number, since it uses less digits than its factorization.

3857457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 117600, while the sum is 39.

The square root of 3857457 is about 1964.0409873524. The cubic root of 3857457 is about 156.8316450300.

The spelling of 3857457 in words is "three million, eight hundred fifty-seven thousand, four hundred fifty-seven".