2800890 has 24 divisors (see below), whose sum is σ = 7282548. Its totient is φ = 746880.

The previous prime is 2800883. The next prime is 2800921. The reversal of 2800890 is 980082.

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 8649 = 1671^2 + 93^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15471 + ... + 15650.

2^2800890 is an apocalyptic number.

2800890 is an abundant number, since it is smaller than the sum of its proper divisors (4481658).

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

2800890 is a wasteful number, since it uses less digits than its factorization.

2800890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31134 (or 31131 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2800890 is about 1673.5859703045. The cubic root of 2800890 is about 140.9609066209.

The spelling of 2800890 in words is "two million, eight hundred thousand, eight hundred ninety".