2012778 has 12 divisors (see below), whose sum is σ = 4361058. Its totient is φ = 670920.

The previous prime is 2012767. The next prime is 2012789. The reversal of 2012778 is 8772102.

It is an interprime number because it is at equal distance from previous prime (2012767) and next prime (2012789).

It can be written as a sum of positive squares in only one way, i.e., 1656369 + 356409 = 1287^2 + 597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55893 + ... + 55928.

2^2012778 is an apocalyptic number.

2012778 is an abundant number, since it is smaller than the sum of its proper divisors (2348280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012778 is a wasteful number, since it uses less digits than its factorization.

2012778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111829 (or 111826 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 2012778 is about 1418.7240746530. The cubic root of 2012778 is about 126.2598567607.

The spelling of 2012778 in words is "two million, twelve thousand, seven hundred seventy-eight".