2800090 has 8 divisors (see below), whose sum is σ = 5040180. Its totient is φ = 1120032.

The previous prime is 2800079. The next prime is 2800103. The reversal of 2800090 is 900082.

It can be written as a sum of positive squares in 2 ways, for example, as 2621161 + 178929 = 1619^2 + 423^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139995 + ... + 140014.

2^2800090 is an apocalyptic number.

2800090 is a deficient number, since it is larger than the sum of its proper divisors (2240090).

2800090 is a wasteful number, since it uses less digits than its factorization.

2800090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280016.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2800090 is about 1673.3469454958. The cubic root of 2800090 is about 140.9474847606.

The spelling of 2800090 in words is "two million, eight hundred thousand, ninety".