2812978 has 8 divisors (see below), whose sum is σ = 4822272. Its totient is φ = 1205556.

The previous prime is 2812967. The next prime is 2812993. The reversal of 2812978 is 8792182.

2812978 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 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 3 ways as a sum of consecutive naturals, for example, 100450 + ... + 100477.

It is an arithmetic number, because the mean of its divisors is an integer number (602784).

2^2812978 is an apocalyptic number.

2812978 is a deficient number, since it is larger than the sum of its proper divisors (2009294).

2812978 is a wasteful number, since it uses less digits than its factorization.

2812978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200936.

The product of its digits is 16128, while the sum is 37.

The square root of 2812978 is about 1677.1934891359. The cubic root of 2812978 is about 141.1634005942.

The spelling of 2812978 in words is "two million, eight hundred twelve thousand, nine hundred seventy-eight".