2778395 has 8 divisors (see below), whose sum is σ = 3530304. Its totient is φ = 2091904.

The previous prime is 2778383. The next prime is 2778401. The reversal of 2778395 is 5938772.

2778395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2778395 - 2¹⁶ = 2712859 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 7² + 7² + 8⁷ + 3⁹ + 9⁵ + 5⁷ .

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16259 + ... + 16428.

It is an arithmetic number, because the mean of its divisors is an integer number (441288).

2^2778395 is an apocalyptic number.

2778395 is a deficient number, since it is larger than the sum of its proper divisors (751909).

2778395 is a wasteful number, since it uses less digits than its factorization.

2778395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32709.

The product of its digits is 105840, while the sum is 41.

The square root of 2778395 is about 1666.8518230485. The cubic root of 2778395 is about 140.5825218202.

The spelling of 2778395 in words is "two million, seven hundred seventy-eight thousand, three hundred ninety-five".