47523138 has 24 divisors (see below), whose sum is σ = 102922128. Its totient is φ = 14622192.

The previous prime is 47523101. The next prime is 47523149. The reversal of 47523138 is 83132574.

It is a junction number, because it is equal to n+sod(n) for n = 47523099 and 47523108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22420 + ... + 24447.

It is an arithmetic number, because the mean of its divisors is an integer number (4288422).

Almost surely, 2^47523138 is an apocalyptic number.

47523138 is an abundant number, since it is smaller than the sum of its proper divisors (55398990).

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

47523138 is a wasteful number, since it uses less digits than its factorization.

47523138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46898 (or 46885 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 47523138 is about 6893.7027786234. The cubic root of 47523138 is about 362.2166168910.

The spelling of 47523138 in words is "forty-seven million, five hundred twenty-three thousand, one hundred thirty-eight".