2644040392 has 24 divisors (see below), whose sum is σ = 5766976710. Its totient is φ = 1133160000.

The previous prime is 2644040383. The next prime is 2644040393. The reversal of 2644040392 is 2930404462.

2644040392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2008294596 + 635745796 = 44814^2 + 25214^2 .

It is not an unprimeable number, because it can be changed into a prime (2644040393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3372109 + ... + 3372892.

Almost surely, 2^2644040392 is an apocalyptic number.

It is an amenable number.

2644040392 is an abundant number, since it is smaller than the sum of its proper divisors (3122936318).

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

2644040392 is a wasteful number, since it uses less digits than its factorization.

2644040392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6745021 (or 6745010 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 2644040392 is about 51420.2332939087. The cubic root of 2644040392 is about 1382.7893577955.

The spelling of 2644040392 in words is "two billion, six hundred forty-four million, forty thousand, three hundred ninety-two".