2798388 has 36 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 932472.

The previous prime is 2798381. The next prime is 2798437. The reversal of 2798388 is 8838972.

2798388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (203840).

2^2798388 is an apocalyptic number.

It is an amenable number.

2798388 is an abundant number, since it is smaller than the sum of its proper divisors (4539852).

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

2798388 is a wasteful number, since it uses less digits than its factorization.

2798388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2884 counting only the distinct ones).

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

The square root of 2798388 is about 1672.8383065915. The cubic root of 2798388 is about 140.9189212453.

The spelling of 2798388 in words is "two million, seven hundred ninety-eight thousand, three hundred eighty-eight".