2878686 has 16 divisors (see below), whose sum is σ = 6397200. Its totient is φ = 959544.

The previous prime is 2878679. The next prime is 2878693. The reversal of 2878686 is 6868782.

It is an interprime number because it is at equal distance from previous prime (2878679) and next prime (2878693).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26601 + ... + 26708.

It is an arithmetic number, because the mean of its divisors is an integer number (399825).

2^2878686 is an apocalyptic number.

2878686 is an abundant number, since it is smaller than the sum of its proper divisors (3518514).

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

2878686 is a wasteful number, since it uses less digits than its factorization.

2878686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53320 (or 53314 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 2878686 is about 1696.6690897167. The cubic root of 2878686 is about 142.2540911204.

The spelling of 2878686 in words is "two million, eight hundred seventy-eight thousand, six hundred eighty-six".