2789886 has 32 divisors (see below), whose sum is σ = 6241536. Its totient is φ = 824000.

The previous prime is 2789881. The next prime is 2789893. The reversal of 2789886 is 6889872.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2191 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (195048).

2^2789886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2789886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3120768).

2789886 is an abundant number, since it is smaller than the sum of its proper divisors (3451650).

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

2789886 is a wasteful number, since it uses less digits than its factorization.

2789886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 387072, while the sum is 48.

The square root of 2789886 is about 1670.2951834930. The cubic root of 2789886 is about 140.7760642314.

The spelling of 2789886 in words is "two million, seven hundred eighty-nine thousand, eight hundred eighty-six".