3871257 has 16 divisors (see below), whose sum is σ = 5886720. Its totient is φ = 2241792.

The previous prime is 3871211. The next prime is 3871271. The reversal of 3871257 is 7521783.

It is not a de Polignac number, because 3871257 - 2⁷ = 3871129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3871657) 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, 2257 + ... + 3582.

It is an arithmetic number, because the mean of its divisors is an integer number (367920).

Almost surely, 2^3871257 is an apocalyptic number.

It is an amenable number.

3871257 is a deficient number, since it is larger than the sum of its proper divisors (2015463).

3871257 is a wasteful number, since it uses less digits than its factorization.

3871257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872.

The product of its digits is 11760, while the sum is 33.

The square root of 3871257 is about 1967.5510158570. The cubic root of 3871257 is about 157.0184434768.

The spelling of 3871257 in words is "three million, eight hundred seventy-one thousand, two hundred fifty-seven".