47009728 has 28 divisors (see below), whose sum is σ = 95051880. Its totient is φ = 23059712.

The previous prime is 47009719. The next prime is 47009747. The reversal of 47009728 is 82790074.

It is a happy number.

47009728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 3538 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (3394710).

Almost surely, 2^47009728 is an apocalyptic number.

It is an amenable number.

47009728 is an abundant number, since it is smaller than the sum of its proper divisors (48042152).

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

47009728 is a wasteful number, since it uses less digits than its factorization.

47009728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13924 (or 13914 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 47009728 is about 6856.3640510113. The cubic root of 47009728 is about 360.9075046368.

The spelling of 47009728 in words is "forty-seven million, nine thousand, seven hundred twenty-eight".