2011944 has 32 divisors (see below), whose sum is σ = 5487840. Its totient is φ = 609600.

The previous prime is 2011939. The next prime is 2011951. The reversal of 2011944 is 4491102.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 2011944.

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 7 ways as a sum of consecutive naturals, for example, 3547 + ... + 4074.

It is an arithmetic number, because the mean of its divisors is an integer number (171495).

2^2011944 is an apocalyptic number.

2011944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2011944 is an abundant number, since it is smaller than the sum of its proper divisors (3475896).

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

2011944 is a wasteful number, since it uses less digits than its factorization.

2011944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641 (or 7637 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2011944 is about 1418.4301181236. The cubic root of 2011944 is about 126.2424156474.

It can be divided in two parts, 201 and 1944, that added together give a triangular number (2145 = T₆₅).

The spelling of 2011944 in words is "two million, eleven thousand, nine hundred forty-four".