2778344 has 32 divisors (see below), whose sum is σ = 5702400. Its totient is φ = 1263360.

The previous prime is 2778343. The next prime is 2778353. The reversal of 2778344 is 4438772.

2778344 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3887 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (178200).

2^2778344 is an apocalyptic number.

It is an amenable number.

2778344 is an abundant number, since it is smaller than the sum of its proper divisors (2924056).

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

2778344 is a wasteful number, since it uses less digits than its factorization.

2778344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 709 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 2778344 is about 1666.8365246778. The cubic root of 2778344 is about 140.5816616411.

The spelling of 2778344 in words is "two million, seven hundred seventy-eight thousand, three hundred forty-four".