4049728644 has 48 divisors (see below), whose sum is σ = 10774850688. Its totient is φ = 1172771328.

The previous prime is 4049728621. The next prime is 4049728649. The reversal of 4049728644 is 4468279404.

It is a junction number, because it is equal to n+sod(n) for n = 4049728593 and 4049728602.

It is not an unprimeable number, because it can be changed into a prime (4049728649) 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, 760872 + ... + 766175.

It is an arithmetic number, because the mean of its divisors is an integer number (224476056).

Almost surely, 2^4049728644 is an apocalyptic number.

It is an amenable number.

4049728644 is an abundant number, since it is smaller than the sum of its proper divisors (6725122044).

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

4049728644 is a wasteful number, since it uses less digits than its factorization.

4049728644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527084 (or 1527082 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The square root of 4049728644 is about 63637.4782969910. The cubic root of 4049728644 is about 1593.9522531296.

The spelling of 4049728644 in words is "four billion, forty-nine million, seven hundred twenty-eight thousand, six hundred forty-four".