2808828 has 72 divisors (see below), whose sum is σ = 7980336. Its totient is φ = 825600.

The previous prime is 2808811. The next prime is 2808833. The reversal of 2808828 is 8288082.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2808792 and 2808801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16150 + ... + 16322.

It is an arithmetic number, because the mean of its divisors is an integer number (110838).

2^2808828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2808828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3990168).

2808828 is an abundant number, since it is smaller than the sum of its proper divisors (5171508).

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

2808828 is a wasteful number, since it uses less digits than its factorization.

2808828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 2808828 is about 1675.9558466738. The cubic root of 2808828 is about 141.0939467461.

The spelling of 2808828 in words is "two million, eight hundred eight thousand, eight hundred twenty-eight".