2798823 has 4 divisors (see below), whose sum is σ = 3731768. Its totient is φ = 1865880.

The previous prime is 2798821. The next prime is 2798837. The reversal of 2798823 is 3288972.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2798823 - 2¹ = 2798821 is a prime.

It is a d-powerful number, because it can be written as 2 + 7⁶ + 9⁶ + 8⁵ + 8⁷ + 2⁷ + 3⁹ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798821) 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 3 ways as a sum of consecutive naturals, for example, 466468 + ... + 466473.

It is an arithmetic number, because the mean of its divisors is an integer number (932942).

2^2798823 is an apocalyptic number.

2798823 is a deficient number, since it is larger than the sum of its proper divisors (932945).

2798823 is an equidigital number, since it uses as much as digits as its factorization.

2798823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932944.

The product of its digits is 48384, while the sum is 39.

The square root of 2798823 is about 1672.9683200826. The cubic root of 2798823 is about 140.9262226577.

The spelling of 2798823 in words is "two million, seven hundred ninety-eight thousand, eight hundred twenty-three".