2785880 has 32 divisors (see below), whose sum is σ = 6315840. Its totient is φ = 1105920.

The previous prime is 2785879. The next prime is 2785891. The reversal of 2785880 is 885872.

It is a super-2 number, since 2×2785880² = 15522254748800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10145 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (197370).

2^2785880 is an apocalyptic number.

2785880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785880 is an abundant number, since it is smaller than the sum of its proper divisors (3529960).

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

2785880 is a wasteful number, since it uses less digits than its factorization.

2785880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 2785880 is about 1669.0955634714. The cubic root of 2785880 is about 140.7086517930.

The spelling of 2785880 in words is "two million, seven hundred eighty-five thousand, eight hundred eighty".