2078978 has 16 divisors (see below), whose sum is σ = 3468096. Its totient is φ = 926640.

The previous prime is 2078977. The next prime is 2079013. The reversal of 2078978 is 8798702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078971) 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 7 ways as a sum of consecutive naturals, for example, 275 + ... + 2057.

It is an arithmetic number, because the mean of its divisors is an integer number (216756).

2^2078978 is an apocalyptic number.

2078978 is a deficient number, since it is larger than the sum of its proper divisors (1389118).

2078978 is a wasteful number, since it uses less digits than its factorization.

2078978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2078978 is about 1441.8661519018. The cubic root of 2078978 is about 127.6291757592.

The spelling of 2078978 in words is "two million, seventy-eight thousand, nine hundred seventy-eight".