2778794 has 8 divisors (see below), whose sum is σ = 4236708. Its totient is φ = 1366560.

The previous prime is 2778793. The next prime is 2778799. The reversal of 2778794 is 4978772.

2778794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2765569 + 13225 = 1663^2 + 115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2778793) 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 3 ways as a sum of consecutive naturals, for example, 11267 + ... + 11510.

2^2778794 is an apocalyptic number.

2778794 is a deficient number, since it is larger than the sum of its proper divisors (1457914).

2778794 is a wasteful number, since it uses less digits than its factorization.

2778794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22840.

The product of its digits is 197568, while the sum is 44.

The square root of 2778794 is about 1666.9715054553. The cubic root of 2778794 is about 140.5892510940.

The spelling of 2778794 in words is "two million, seven hundred seventy-eight thousand, seven hundred ninety-four".