47720424 has 32 divisors (see below), whose sum is σ = 120816000. Its totient is φ = 15704832.

The previous prime is 47720401. The next prime is 47720429. The reversal of 47720424 is 42402774.

47720424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 47720391 and 47720400.

It is not an unprimeable number, because it can be changed into a prime (47720429) 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, 10689 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (3775500).

Almost surely, 2^47720424 is an apocalyptic number.

It is an amenable number.

47720424 is an abundant number, since it is smaller than the sum of its proper divisors (73095576).

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

47720424 is a wasteful number, since it uses less digits than its factorization.

47720424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25257 (or 25253 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 47720424 is about 6907.9971048054. The cubic root of 47720424 is about 362.7171562912.

The spelling of 47720424 in words is "forty-seven million, seven hundred twenty thousand, four hundred twenty-four".