2078090 has 24 divisors (see below), whose sum is σ = 4352292. Its totient is φ = 712320.

The previous prime is 2078081. The next prime is 2078093. The reversal of 2078090 is 908702.

It can be written as a sum of positive squares in 2 ways, for example, as 1940449 + 137641 = 1393^2 + 371^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2078093) 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 11 ways as a sum of consecutive naturals, for example, 1631 + ... + 2610.

2^2078090 is an apocalyptic number.

2078090 is an abundant number, since it is smaller than the sum of its proper divisors (2274202).

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

2078090 is a wasteful number, since it uses less digits than its factorization.

2078090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2078090 is about 1441.5581847432. The cubic root of 2078090 is about 127.6110016294.

The spelling of 2078090 in words is "two million, seventy-eight thousand, ninety".