2778922 has 24 divisors (see below), whose sum is σ = 4631364. Its totient is φ = 1245312.

The previous prime is 2778917. The next prime is 2778967. The reversal of 2778922 is 2298772.

2778922 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 2405601 + 373321 = 1551^2 + 611^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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 11 ways as a sum of consecutive naturals, for example, 59103 + ... + 59149.

2^2778922 is an apocalyptic number.

2778922 is a deficient number, since it is larger than the sum of its proper divisors (1852442).

2778922 is a wasteful number, since it uses less digits than its factorization.

2778922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 103 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 2778922 is about 1667.0098979910. The cubic root of 2778922 is about 140.5914097220.

The spelling of 2778922 in words is "two million, seven hundred seventy-eight thousand, nine hundred twenty-two".