47181872 has 20 divisors (see below), whose sum is σ = 93141360. Its totient is φ = 23145408.

The previous prime is 47181833. The next prime is 47181899. The reversal of 47181872 is 27818174.

47181872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47181872² = 4452258090848768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 26972 + ... + 28667.

It is an arithmetic number, because the mean of its divisors is an integer number (4657068).

Almost surely, 2^47181872 is an apocalyptic number.

It is an amenable number.

47181872 is a deficient number, since it is larger than the sum of its proper divisors (45959488).

47181872 is a wasteful number, since it uses less digits than its factorization.

47181872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55700 (or 55694 counting only the distinct ones).

The product of its digits is 25088, while the sum is 38.

The square root of 47181872 is about 6868.9061720189. The cubic root of 47181872 is about 361.3475013697.

The spelling of 47181872 in words is "forty-seven million, one hundred eighty-one thousand, eight hundred seventy-two".