47128437928 has 128 divisors (see below), whose sum is σ = 104772165120. Its totient is φ = 19592789760.

The previous prime is 47128437899. The next prime is 47128437929. The reversal of 47128437928 is 82973482174.

It is not an unprimeable number, because it can be changed into a prime (47128437929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90111475 + ... + 90111997.

It is an arithmetic number, because the mean of its divisors is an integer number (818532540).

Almost surely, 2^47128437928 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 47128437928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52386082560).

47128437928 is an abundant number, since it is smaller than the sum of its proper divisors (57643727192).

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

47128437928 is a wasteful number, since it uses less digits than its factorization.

47128437928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1123 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 55.

The spelling of 47128437928 in words is "forty-seven billion, one hundred twenty-eight million, four hundred thirty-seven thousand, nine hundred twenty-eight".