2790090 has 48 divisors (see below), whose sum is σ = 7511400. Its totient is φ = 717696.

The previous prime is 2790089. The next prime is 2790101. The reversal of 2790090 is 900972.

It can be written as a sum of positive squares in 4 ways, for example, as 2223081 + 567009 = 1491^2 + 753^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2076 + ... + 3144.

2^2790090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2790090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3755700).

2790090 is an abundant number, since it is smaller than the sum of its proper divisors (4721310).

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

2790090 is a wasteful number, since it uses less digits than its factorization.

2790090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 2790090 is about 1670.3562494270. The cubic root of 2790090 is about 140.7794953892.

The spelling of 2790090 in words is "two million, seven hundred ninety thousand, ninety".