2621439424 has 56 divisors (see below), whose sum is σ = 5492810960. Its totient is φ = 1237856256.

The previous prime is 2621439419. The next prime is 2621439433. The reversal of 2621439424 is 4249341262.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406594 + ... + 412990.

It is an arithmetic number, because the mean of its divisors is an integer number (98085910).

Almost surely, 2^2621439424 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 2621439424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2746405480).

2621439424 is an abundant number, since it is smaller than the sum of its proper divisors (2871371536).

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

2621439424 is a wasteful number, since it uses less digits than its factorization.

2621439424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765 (or 6755 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 2621439424 is about 51199.9943749997. The cubic root of 2621439424 is about 1378.8381006313.

The spelling of 2621439424 in words is "two billion, six hundred twenty-one million, four hundred thirty-nine thousand, four hundred twenty-four".