2001404424 has 64 divisors (see below), whose sum is σ = 5315207040. Its totient is φ = 625832960.

The previous prime is 2001404413. The next prime is 2001404429. The reversal of 2001404424 is 4244041002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001404424.

It is not an unprimeable number, because it can be changed into a prime (2001404429) 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, 119002 + ... + 134774.

It is an arithmetic number, because the mean of its divisors is an integer number (83050110).

Almost surely, 2^2001404424 is an apocalyptic number.

2001404424 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 2001404424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2657603520).

2001404424 is an abundant number, since it is smaller than the sum of its proper divisors (3313802616).

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

2001404424 is a wasteful number, since it uses less digits than its factorization.

2001404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110 (or 16106 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2001404424 is about 44737.0587321071. The cubic root of 2001404424 is about 1260.2158914520.

Adding to 2001404424 its reverse (4244041002), we get a palindrome (6245445426).

The spelling of 2001404424 in words is "two billion, one million, four hundred four thousand, four hundred twenty-four".