47021128 has 32 divisors (see below), whose sum is σ = 109920960. Its totient is φ = 18319680.

The previous prime is 47021101. The next prime is 47021129. The reversal of 47021128 is 82112074.

It is a happy number.

47021128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (47021129) 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 7 ways as a sum of consecutive naturals, for example, 37551 + ... + 38782.

It is an arithmetic number, because the mean of its divisors is an integer number (3435030).

Almost surely, 2^47021128 is an apocalyptic number.

It is an amenable number.

47021128 is an abundant number, since it is smaller than the sum of its proper divisors (62899832).

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

47021128 is a wasteful number, since it uses less digits than its factorization.

47021128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76357 (or 76353 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 47021128 is about 6857.1953450372. The cubic root of 47021128 is about 360.9366759962.

The spelling of 47021128 in words is "forty-seven million, twenty-one thousand, one hundred twenty-eight".