2778326 has 4 divisors (see below), whose sum is σ = 4167492. Its totient is φ = 1389162.

The previous prime is 2778323. The next prime is 2778329. The reversal of 2778326 is 6238772.

2778326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2778323) and next prime (2778329).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778323) 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 as a sum of consecutive naturals, namely, 694580 + ... + 694583.

It is an arithmetic number, because the mean of its divisors is an integer number (1041873).

2^2778326 is an apocalyptic number.

2778326 is a deficient number, since it is larger than the sum of its proper divisors (1389166).

2778326 is a wasteful number, since it uses less digits than its factorization.

2778326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389165.

The product of its digits is 28224, while the sum is 35.

The square root of 2778326 is about 1666.8311252193. The cubic root of 2778326 is about 140.5813580459.

The spelling of 2778326 in words is "two million, seven hundred seventy-eight thousand, three hundred twenty-six".