2218432 has 28 divisors (see below), whose sum is σ = 4663440. Its totient is φ = 1043456.

The previous prime is 2218429. The next prime is 2218439. The reversal of 2218432 is 2348122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69 + ... + 2107.

2^2218432 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 2218432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2331720).

2218432 is an abundant number, since it is smaller than the sum of its proper divisors (2445008).

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

2218432 is a wasteful number, since it uses less digits than its factorization.

2218432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2058 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 2218432 is about 1489.4401632828. The cubic root of 2218432 is about 130.4213547272.

It can be divided in two parts, 22 and 18432, that multiplied together give a palindrome (405504).

The spelling of 2218432 in words is "two million, two hundred eighteen thousand, four hundred thirty-two".