2788893 has 6 divisors (see below), whose sum is σ = 4028414. Its totient is φ = 1859256.

The previous prime is 2788889. The next prime is 2788927. The reversal of 2788893 is 3988872.

2788893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 636804 = 1467^2 + 798^2 .

It is not a de Polignac number, because 2788893 - 2² = 2788889 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2788813) 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 5 ways as a sum of consecutive naturals, for example, 154930 + ... + 154947.

2^2788893 is an apocalyptic number.

It is an amenable number.

2788893 is a deficient number, since it is larger than the sum of its proper divisors (1239521).

2788893 is a wasteful number, since it uses less digits than its factorization.

2788893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309883 (or 309880 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2788893 is about 1669.9979041903. The cubic root of 2788893 is about 140.7593601773.

The spelling of 2788893 in words is "two million, seven hundred eighty-eight thousand, eight hundred ninety-three".