3047209728 has 144 divisors (see below), whose sum is σ = 8437632000. Its totient is φ = 975237120.

The previous prime is 3047209709. The next prime is 3047209729. The reversal of 3047209728 is 8279027403.

It is a self number, because there is not a number n which added to its sum of digits gives 3047209728.

It is not an unprimeable number, because it can be changed into a prime (3047209729) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3546963 + ... + 3547821.

Almost surely, 2^3047209728 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 3047209728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4218816000).

3047209728 is an abundant number, since it is smaller than the sum of its proper divisors (5390422272).

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

3047209728 is a wasteful number, since it uses less digits than its factorization.

3047209728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 3047209728 is about 55201.5373698958. The cubic root of 3047209728 is about 1449.7755860386.

The spelling of 3047209728 in words is "three billion, forty-seven million, two hundred nine thousand, seven hundred twenty-eight".