47477728 has 24 divisors (see below), whose sum is σ = 93721320. Its totient is φ = 23675520.

The previous prime is 47477707. The next prime is 47477767. The reversal of 47477728 is 82777474.

47477728 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, 11638 + ... + 15178.

It is an arithmetic number, because the mean of its divisors is an integer number (3905055).

Almost surely, 2^47477728 is an apocalyptic number.

It is an amenable number.

47477728 is a deficient number, since it is larger than the sum of its proper divisors (46243592).

47477728 is a wasteful number, since it uses less digits than its factorization.

47477728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970 (or 3962 counting only the distinct ones).

The product of its digits is 614656, while the sum is 46.

The square root of 47477728 is about 6890.4084058929. The cubic root of 47477728 is about 362.1012099615.

It can be divided in two parts, 47477 and 728, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 47477728 in words is "forty-seven million, four hundred seventy-seven thousand, seven hundred twenty-eight".