47538642 has 16 divisors (see below), whose sum is σ = 96636672. Its totient is φ = 15586320.

The previous prime is 47538629. The next prime is 47538649. The reversal of 47538642 is 24683574.

It is a happy number.

47538642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 47538642.

It is not an unprimeable number, because it can be changed into a prime (47538649) 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, 64578 + ... + 65309.

It is an arithmetic number, because the mean of its divisors is an integer number (6039792).

Almost surely, 2^47538642 is an apocalyptic number.

47538642 is an abundant number, since it is smaller than the sum of its proper divisors (49098030).

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

47538642 is a wasteful number, since it uses less digits than its factorization.

47538642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129953.

The product of its digits is 161280, while the sum is 39.

The square root of 47538642 is about 6894.8271914530. The cubic root of 47538642 is about 362.2560025887.

The spelling of 47538642 in words is "forty-seven million, five hundred thirty-eight thousand, six hundred forty-two".