2805280828 has 12 divisors (see below), whose sum is σ = 5610561712. Its totient is φ = 1202263200.

The previous prime is 2805280811. The next prime is 2805280843. The reversal of 2805280828 is 8280825082.

It is a happy number.

2805280828 is an admirable number.

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, 50094273 + ... + 50094328.

Almost surely, 2^2805280828 is an apocalyptic number.

2805280828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2805280828 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2805280828 is a wasteful number, since it uses less digits than its factorization.

2805280828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100188612 (or 100188610 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 43.

The square root of 2805280828 is about 52964.9018501875. The cubic root of 2805280828 is about 1410.3452749996.

The spelling of 2805280828 in words is "two billion, eight hundred five million, two hundred eighty thousand, eight hundred twenty-eight".