2788039 has 4 divisors (see below), whose sum is σ = 2793280. Its totient is φ = 2782800.

The previous prime is 2788033. The next prime is 2788057. The reversal of 2788039 is 9308872.

2788039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2788039 - 2⁵ = 2788007 is a prime.

It is a super-2 number, since 2×2788039² = 15546322931042, which contains 22 as substring.

It is a Duffinian number.

2788039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2787989 and 2788007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788033) 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, 1719 + ... + 2920.

It is an arithmetic number, because the mean of its divisors is an integer number (698320).

2^2788039 is an apocalyptic number.

2788039 is a deficient number, since it is larger than the sum of its proper divisors (5241).

2788039 is an equidigital number, since it uses as much as digits as its factorization.

2788039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2788039 is about 1669.7421956697. The cubic root of 2788039 is about 140.7449911826.

The spelling of 2788039 in words is "two million, seven hundred eighty-eight thousand, thirty-nine".