2820078 has 12 divisors (see below), whose sum is σ = 6110208. Its totient is φ = 940020.

The previous prime is 2820071. The next prime is 2820089. The reversal of 2820078 is 8700282.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820071) by changing a digit.

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, 78318 + ... + 78353.

It is an arithmetic number, because the mean of its divisors is an integer number (509184).

2^2820078 is an apocalyptic number.

2820078 is an abundant number, since it is smaller than the sum of its proper divisors (3290130).

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

2820078 is a wasteful number, since it uses less digits than its factorization.

2820078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156679 (or 156676 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 2820078 is about 1679.3087863761. The cubic root of 2820078 is about 141.2820670140.

The spelling of 2820078 in words is "two million, eight hundred twenty thousand, seventy-eight".