2644020264 has 16 divisors (see below), whose sum is σ = 6610050720. Its totient is φ = 881340080.

The previous prime is 2644020257. The next prime is 2644020289. The reversal of 2644020264 is 4620204462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55083732 + ... + 55083779.

It is an arithmetic number, because the mean of its divisors is an integer number (413128170).

Almost surely, 2^2644020264 is an apocalyptic number.

2644020264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2644020264 is an abundant number, since it is smaller than the sum of its proper divisors (3966030456).

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

2644020264 is a wasteful number, since it uses less digits than its factorization.

2644020264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110167520 (or 110167516 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 2644020264 is about 51420.0375729151. The cubic root of 2644020264 is about 1382.7858489163.

The spelling of 2644020264 in words is "two billion, six hundred forty-four million, twenty thousand, two hundred sixty-four".