3087891 has 12 divisors (see below), whose sum is σ = 4614480. Its totient is φ = 1987440.

The previous prime is 3087871. The next prime is 3087893. The reversal of 3087891 is 1987803.

It is not a de Polignac number, because 3087891 - 2⁵ = 3087859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3087893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5655 + ... + 6176.

It is an arithmetic number, because the mean of its divisors is an integer number (384540).

Almost surely, 2^3087891 is an apocalyptic number.

3087891 is a deficient number, since it is larger than the sum of its proper divisors (1526589).

3087891 is a wasteful number, since it uses less digits than its factorization.

3087891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866 (or 11863 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3087891 is about 1757.2395966401. The cubic root of 3087891 is about 145.6198749939.

The spelling of 3087891 in words is "three million, eighty-seven thousand, eight hundred ninety-one".