2421824 has 28 divisors (see below), whose sum is σ = 4876800. Its totient is φ = 1193088.

The previous prime is 2421823. The next prime is 2421841. The reversal of 2421824 is 4281242.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2421824.

It is not an unprimeable number, because it can be changed into a prime (2421821) 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, 4817 + ... + 5295.

2^2421824 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 2421824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438400).

2421824 is an abundant number, since it is smaller than the sum of its proper divisors (2454976).

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

2421824 is an equidigital number, since it uses as much as digits as its factorization.

2421824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 560 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 2421824 is about 1556.2210639880. The cubic root of 2421824 is about 134.2911912229.

It can be divided in two parts, 24218 and 24, that added together give a palindrome (24242).

The spelling of 2421824 in words is "two million, four hundred twenty-one thousand, eight hundred twenty-four".