2011388 has 6 divisors (see below), whose sum is σ = 3519936. Its totient is φ = 1005692.

The previous prime is 2011381. The next prime is 2011391. The reversal of 2011388 is 8831102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251420 + ... + 251427.

It is an arithmetic number, because the mean of its divisors is an integer number (586656).

2^2011388 is an apocalyptic number.

It is an amenable number.

2011388 is a deficient number, since it is larger than the sum of its proper divisors (1508548).

2011388 is a wasteful number, since it uses less digits than its factorization.

2011388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502851 (or 502849 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2011388 is about 1418.2341132549. The cubic root of 2011388 is about 126.2307855606.

The spelling of 2011388 in words is "two million, eleven thousand, three hundred eighty-eight".