2798838 has 48 divisors (see below), whose sum is σ = 7032480. Its totient is φ = 787968.

The previous prime is 2798837. The next prime is 2798849. The reversal of 2798838 is 8388972.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2798793 and 2798802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798837) 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 23 ways as a sum of consecutive naturals, for example, 12108 + ... + 12336.

It is an arithmetic number, because the mean of its divisors is an integer number (146510).

2^2798838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2798838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3516240).

2798838 is an abundant number, since it is smaller than the sum of its proper divisors (4233642).

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

2798838 is a wasteful number, since it uses less digits than its factorization.

2798838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 338 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2798838 is about 1672.9728031262. The cubic root of 2798838 is about 140.9264744170.

The spelling of 2798838 in words is "two million, seven hundred ninety-eight thousand, eight hundred thirty-eight".