2211924 has 48 divisors (see below), whose sum is σ = 6068160. Its totient is φ = 618240.

The previous prime is 2211919. The next prime is 2211929. The reversal of 2211924 is 4291122.

It is an interprime number because it is at equal distance from previous prime (2211919) and next prime (2211929).

It is a self number, because there is not a number n which added to its sum of digits gives 2211924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1072 + ... + 2360.

It is an arithmetic number, because the mean of its divisors is an integer number (126420).

2^2211924 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 2211924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3034080).

2211924 is an abundant number, since it is smaller than the sum of its proper divisors (3856236).

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

2211924 is a wasteful number, since it uses less digits than its factorization.

2211924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1318 counting only the distinct ones).

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

The square root of 2211924 is about 1487.2538451791. The cubic root of 2211924 is about 130.2936949614.

It can be divided in two parts, 221 and 1924, that added together give a triangular number (2145 = T₆₅).

The spelling of 2211924 in words is "two million, two hundred eleven thousand, nine hundred twenty-four".