2011892 has 6 divisors (see below), whose sum is σ = 3520818. Its totient is φ = 1005944.

The previous prime is 2011861. The next prime is 2011897. The reversal of 2011892 is 2981102.

It can be written as a sum of positive squares in only one way, i.e., 1378276 + 633616 = 1174^2 + 796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011897) 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, 251483 + ... + 251490.

It is an arithmetic number, because the mean of its divisors is an integer number (586803).

2^2011892 is an apocalyptic number.

It is an amenable number.

2011892 is a deficient number, since it is larger than the sum of its proper divisors (1508926).

2011892 is a wasteful number, since it uses less digits than its factorization.

2011892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502977 (or 502975 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2011892 is about 1418.4117878811. The cubic root of 2011892 is about 126.2413280323.

Adding to 2011892 its reverse (2981102), we get a palindrome (4992994).

The spelling of 2011892 in words is "two million, eleven thousand, eight hundred ninety-two".