2788028 has 12 divisors (see below), whose sum is σ = 4948272. Its totient is φ = 1374240.

The previous prime is 2788021. The next prime is 2788033. The reversal of 2788028 is 8208872.

2788028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (412356).

2^2788028 is an apocalyptic number.

It is an amenable number.

2788028 is a deficient number, since it is larger than the sum of its proper divisors (2160244).

2788028 is a wasteful number, since it uses less digits than its factorization.

2788028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9892 (or 9890 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 2788028 is about 1669.7389017448. The cubic root of 2788028 is about 140.7448060828.

The spelling of 2788028 in words is "two million, seven hundred eighty-eight thousand, twenty-eight".