47921448 has 32 divisors (see below), whose sum is σ = 120929760. Its totient is φ = 15823680.

The previous prime is 47921441. The next prime is 47921491. The reversal of 47921448 is 84412974.

47921448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47921441) 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, 6763 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (3779055).

Almost surely, 2^47921448 is an apocalyptic number.

It is an amenable number.

47921448 is an abundant number, since it is smaller than the sum of its proper divisors (73008312).

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

47921448 is a wasteful number, since it uses less digits than its factorization.

47921448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18777 (or 18773 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 47921448 is about 6922.5319067520. The cubic root of 47921448 is about 363.2257624671.

The spelling of 47921448 in words is "forty-seven million, nine hundred twenty-one thousand, four hundred forty-eight".