2797978 has 16 divisors (see below), whose sum is σ = 4572000. Its totient is φ = 1279152.

The previous prime is 2797961. The next prime is 2797999. The reversal of 2797978 is 8797972.

2797978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 168 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (285750).

2^2797978 is an apocalyptic number.

2797978 is a deficient number, since it is larger than the sum of its proper divisors (1774022).

2797978 is a wasteful number, since it uses less digits than its factorization.

2797978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589.

The product of its digits is 444528, while the sum is 49.

The square root of 2797978 is about 1672.7157558892. The cubic root of 2797978 is about 140.9120387615.

The spelling of 2797978 in words is "two million, seven hundred ninety-seven thousand, nine hundred seventy-eight".