4047394728 has 64 divisors (see below), whose sum is σ = 10906680960. Its totient is φ = 1244226816.

The previous prime is 4047394721. The next prime is 4047394781. The reversal of 4047394728 is 8274937404.

It is not an unprimeable number, because it can be changed into a prime (4047394721) 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, 380701 + ... + 391187.

It is an arithmetic number, because the mean of its divisors is an integer number (170416890).

Almost surely, 2^4047394728 is an apocalyptic number.

It is an amenable number.

4047394728 is an abundant number, since it is smaller than the sum of its proper divisors (6859286232).

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

4047394728 is a wasteful number, since it uses less digits than its factorization.

4047394728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11746 (or 11742 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 4047394728 is about 63619.1380639505. The cubic root of 4047394728 is about 1593.6459885309.

The spelling of 4047394728 in words is "four billion, forty-seven million, three hundred ninety-four thousand, seven hundred twenty-eight".