2011788 has 72 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 618240.

The previous prime is 2011769. The next prime is 2011799. The reversal of 2011788 is 8871102.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 42781 + ... + 42827.

It is an arithmetic number, because the mean of its divisors is an integer number (76440).

2^2011788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751840).

2011788 is an abundant number, since it is smaller than the sum of its proper divisors (3491892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011788 is a wasteful number, since it uses less digits than its factorization.

2011788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 122 counting only the distinct ones).

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

The square root of 2011788 is about 1418.3751266855. The cubic root of 2011788 is about 126.2391527458.

The spelling of 2011788 in words is "two million, eleven thousand, seven hundred eighty-eight".