2805560 has 16 divisors (see below), whose sum is σ = 6312600. Its totient is φ = 1122208.

The previous prime is 2805533. The next prime is 2805577. The reversal of 2805560 is 655082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35030 + ... + 35109.

2^2805560 is an apocalyptic number.

2805560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2805560 is an abundant number, since it is smaller than the sum of its proper divisors (3507040).

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

2805560 is a wasteful number, since it uses less digits than its factorization.

2805560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70150 (or 70146 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2805560 is about 1674.9805969025. The cubic root of 2805560 is about 141.0392057702.

The spelling of 2805560 in words is "two million, eight hundred five thousand, five hundred sixty".