2309886 has 12 divisors (see below), whose sum is σ = 5004792. Its totient is φ = 769956.

The previous prime is 2309869. The next prime is 2309891. The reversal of 2309886 is 6889032.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2309886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64146 + ... + 64181.

It is an arithmetic number, because the mean of its divisors is an integer number (417066).

2^2309886 is an apocalyptic number.

2309886 is an abundant number, since it is smaller than the sum of its proper divisors (2694906).

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

2309886 is a wasteful number, since it uses less digits than its factorization.

2309886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128335 (or 128332 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2309886 is about 1519.8309116477. The cubic root of 2309886 is about 132.1894662116.

The spelling of 2309886 in words is "two million, three hundred nine thousand, eight hundred eighty-six".