2218944 has 112 divisors (see below), whose sum is σ = 7282688. Its totient is φ = 580608.

The previous prime is 2218943. The next prime is 2218967. The reversal of 2218944 is 4498122.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17409 + ... + 17535.

It is an arithmetic number, because the mean of its divisors is an integer number (65024).

2^2218944 is an apocalyptic number.

2218944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3641344).

2218944 is an abundant number, since it is smaller than the sum of its proper divisors (5063744).

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

2218944 is a wasteful number, since it uses less digits than its factorization.

2218944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 152 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 2218944 is about 1489.6120300266. The cubic root of 2218944 is about 130.4313874285.

The spelling of 2218944 in words is "two million, two hundred eighteen thousand, nine hundred forty-four".