2788011 has 6 divisors (see below), whose sum is σ = 4027140. Its totient is φ = 1858668.

The previous prime is 2788007. The next prime is 2788021. The reversal of 2788011 is 1108872.

2788011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2788011 - 2² = 2788007 is a prime.

It is a super-2 number, since 2×2788011² = 15546010672242, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 154881 + ... + 154898.

It is an arithmetic number, because the mean of its divisors is an integer number (671190).

2^2788011 is an apocalyptic number.

2788011 is a deficient number, since it is larger than the sum of its proper divisors (1239129).

2788011 is a wasteful number, since it uses less digits than its factorization.

2788011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309785 (or 309782 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 2788011 is about 1669.7338111208. The cubic root of 2788011 is about 140.7445200184.

The spelling of 2788011 in words is "two million, seven hundred eighty-eight thousand, eleven".